FIELD GUIDESource-led reference
Port & Cable

E297 · Source-scoped pinout variants

PCI Express x8 98-position card-edge connector engineering reference

Amphenol PCI Express card-edge series context: 98 positions and 1.00 mm contact pitch for the x8 form.

Open field noteSource trail

Source checked · no independent review claimed · Fabrication approved: no

PCI Express x8 98-position card-edge engineering boundary original orientation schematic
Original pinout diagram; read the exact variant and view below. Not to scale.

Orientation

How to read this profile

V51 records position count and pitch only; it does not publish PCIe A/B-side logical assignments, card-outline keying dimensions or motherboard routing.

Bounded dimensions

Only what the sources support

Source-scoped dimensions; not fabrication clearances
FieldValueScopeEvidence
Contact pitch1 mmexample component[C297B]

Source-scoped identification facts

Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.

Documented examples; not a mating drawing or compatibility approval
Nominal contacts98S338Source-backed nominal position/contact count for identification: 98. Not a pinout or manufacturing drawing.
Positions / cavity span98 (Claim C297A); 98 (Claim C297B)S338 · S357Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V50 identification fact only; no wiring, protocol compatibility, installation or fabrication approval is inferred. Mechanical/contact-count context only; no PCIe generation, lane enablement, logical pin assignment or board-layout approval is inferred.
Contact pitch1 mm Contact pitch (Recorded example component); 1 mm Source-described pitch / centerline (Claim C297B); 1 mm centerlineS357 · S338Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. example_component; PCI Express x8 card-edge connector example Mechanical/contact-count context only; no PCIe generation, lane enablement, logical pin assignment or board-layout approval is inferred. Named series only, not every family part: Amphenol PCI Express Gen3 98-position family. Documented role: socket. Family source explicitly mapsx1=36,x4=64,x8=98; no exactpart or connector size derived. Standalone retention mechanism varies by product.
Connector rolecard-edge; socketS338 · S357 · S338Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. PCI Express x8 card-edge connector example Named series only, not every family part: Amphenol PCI Express Gen3 98-position family. Documented role: socket. Family source explicitly mapsx1=36,x4=64,x8=98; no exactpart or connector size derived. Standalone retention mechanism varies by product.
ManufacturerAmphenol Communications SolutionsS338Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: Amphenol PCI Express Gen3 98-position family. Documented role: socket. Family source explicitly mapsx1=36,x4=64,x8=98; no exactpart or connector size derived. Standalone retention mechanism varies by product.
SeriesPCI Express Gen3 98-position card-edgeS338Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: Amphenol PCI Express Gen3 98-position family. Documented role: socket. Family source explicitly mapsx1=36,x4=64,x8=98; no exactpart or connector size derived. Standalone retention mechanism varies by product.

Not recorded: Populated contacts, Contact rows, Dimensions / axis, Contact gender / arrangement, Mounting, Coupling / latch, Keying / polarization, Shell / form, Exact part / implementation, Recorded markings, View convention. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Recorded variant and source limits
  • The card-edge form does not by itself establish PCIe generation, active lanes, bifurcation, electrical compliance, power budget or motherboard behavior.
  • Pitch and position count do not constitute a fabrication drawing, slot-compliance gauge or board-layout approval.
  • 3M Gen 5 PCIe x8 extender pinout: 3M sheet 5 X8 PINOUT TABLE, Edgecard pin # to CEM pin #. Side A/B as labelled; no unverified spatial mirroring.
  • Mellanox ConnectX-3 Pro x8 card — source-scoped pin labels: Source schematic contact identities A1-A49 / B1-B49. The two columns are schematic symbol sides, not a verified mating-face or solder-side view.
Report a correction to these facts →

Pins & wiring

Pinout

Choose the exact wiring. Pin numbers follow its stated view; a schematic does not establish physical positions. Check your exact device before wiring.

What the status labels mean
Confirmed
Recorded research passes agree within this variant; this is not independent human review or hardware validation.
Single source
Only one underlying document, or one pass, supports this assignment.
Device-specific
Supported for the named equipment or wiring only. Check your device’s manual.
Unverified
Missing or conflicting evidence. Do not wire from this row.
Not connected
The source explicitly says NC, no contact or no pin for this wiring.
Wiring variant

3M Gen 5 PCIe x8 extender pinout

View and evidence limits

3M sheet 5 X8 PINOUT TABLE, Edgecard pin # to CEM pin #. Side A/B as labelled; no unverified spatial mirroring.

  • P297 PCIe x8 — **Partial; reference-clock conflict remains** — A: 3M Gen 5 extender. B: Mellanox ConnectX-3 Pro, with PICMG used for the polarity discrepancy and routing context. Common eight-lane positions align; test-signal names and optional/reserved sidebands remain source-specific. A13/A14 are still unverified in B. No identical document was used across passes for the PCIe edge connectors.
  • All grounds tied together in PCBs, per drawing. This Gen 5 product includes MFG/CLKREQ#/PWRBRK#; older reserved assignments are not silently updated.
PCI Express x8 98-position card-edge engineering boundary3M sheet 5 X8 PINOUT TABLE, Edgecard pin # to CEM pin #. Side A/B as labelled; no unverified spatial mirroring.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manualA1: PRSNT#1 (single_source)A1A2: +12V (single_source)A2A3: +12V (single_source)A3A4: GND (single_source)A4A5: JTAG2 (single_source)A5A6: JTAG3 (single_source)A6A7: JTAG4 (single_source)A7A8: JTAG5 (single_source)A8A9: +3.3V (single_source)A9A10: +3.3V (single_source)A10A11: PERST# (single_source)A11A12: GND (single_source)A12A13: Not confirmed (unverified)A13A14: Not confirmed (unverified)A14A15: GND (single_source)A15A16: PERp(0) (single_source)A16A17: PERn(0) (single_source)A17A18: GND (single_source)A18A19: MFG (single_source)A19A20: GND (single_source)A20A21: PERp(1) (single_source)A21A22: PERn(1) (single_source)A22A23: GND (single_source)A23A24: GND (single_source)A24A25: PERp(2) (single_source)A25A26: PERn(2) (single_source)A26A27: GND (single_source)A27A28: GND (single_source)A28A29: PERp(3) (single_source)A29A30: PERn(3) (single_source)A30A31: GND (single_source)A31A32: NC (not_connected)A32A33: NC (not_connected)A33A34: GND (single_source)A34A35: PERp(4) (single_source)A35A36: PERn(4) (single_source)A36A37: GND (single_source)A37A38: GND (single_source)A38A39: PERp(5) (single_source)A39A40: PERn(5) (single_source)A40A41: GND (single_source)A41A42: GND (single_source)A42A43: PERp(6) (single_source)A43A44: PERn(6) (single_source)A44A45: GND (single_source)A45A46: GND (single_source)A46A47: PERp(7) (single_source)A47A48: PERn(7) (single_source)A48A49: GND (single_source)A49B1: +12V (single_source)B1B2: +12V (single_source)B2B3: +12V (single_source)B3B4: GND (single_source)B4B5: SMCLK (single_source)B5B6: SMDAT (single_source)B6B7: GND (single_source)B7B8: +3.3V (single_source)B8B9: JTAG1 (single_source)B9B10: 3.3Vaux (single_source)B10B11: WAKE# (single_source)B11B12: CLKREQ# (single_source)B12B13: GND (single_source)B13B14: PETp(0) (single_source)B14B15: PETn(0) (single_source)B15B16: GND (single_source)B16B17: PRSNT2# (single_source)B17B18: GND (single_source)B18B19: PETp(1) (single_source)B19B20: PETn(1) (single_source)B20B21: GND (single_source)B21B22: GND (single_source)B22B23: PETp(2) (single_source)B23B24: PETn(2) (single_source)B24B25: GND (single_source)B25B26: GND (single_source)B26B27: PETp(3) (single_source)B27B28: PETn(3) (single_source)B28B29: GND (single_source)B29B30: PWRBRK# (single_source)B30B31: PRSNT2# (single_source)B31B32: GND (single_source)B32B33: PETp(4) (single_source)B33B34: PETn(4) (single_source)B34B35: GND (single_source)B35B36: GND (single_source)B36B37: PETp(5) (single_source)B37B38: PETn(5) (single_source)B38B39: GND (single_source)B39B40: GND (single_source)B40B41: PETp(6) (single_source)B41B42: PETn(6) (single_source)B42B43: GND (single_source)B43B44: GND (single_source)B44B45: PETp(7) (single_source)B45B46: PETn(7) (single_source)B46B47: GND (single_source)B47B48: PRSNT2# (single_source)B48B49: GND (single_source)B49powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
3M Gen 5 PCIe x8 extender pinout — source-scoped contact map
PinSignalWhat it doesStatus
A1PRSNT#1Control, detection or configuration connection; check the source and device.Single source
Sources
A2+12VPower connection (+12V). Check the specified supply.Single source
Sources
A3+12VPower connection (+12V). Check the specified supply.Single source
Sources
A4GNDGround reference and return.Single source
Sources
A5JTAG2Control, detection or configuration connection; check the source and device.Single source
Sources
A6JTAG3Control, detection or configuration connection; check the source and device.Single source
Sources
A7JTAG4Control, detection or configuration connection; check the source and device.Single source
Sources
A8JTAG5Control, detection or configuration connection; check the source and device.Single source
Sources
A9+3.3VPower connection (+3.3V). Check the specified supply.Single source
Sources
A10+3.3VPower connection (+3.3V). Check the specified supply.Single source
Sources
A11PERST#Reset control; check active level and the named device.Single source
Sources
A12GNDGround reference and return.Single source
Sources
A13Not confirmedNo settled assignment. Do not wire from this row.Unverified
Sources
A14Not confirmedNo settled assignment. Do not wire from this row.Unverified
Sources
A15GNDGround reference and return.Single source
Sources
A16PERp(0)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A17PERn(0)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A18GNDGround reference and return.Single source
Sources
A19MFGControl, detection or configuration connection; check the source and device.Single source
Sources
A20GNDGround reference and return.Single source
Sources
A21PERp(1)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A22PERn(1)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A23GNDGround reference and return.Single source
Sources
A24GNDGround reference and return.Single source
Sources
A25PERp(2)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A26PERn(2)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A27GNDGround reference and return.Single source
Sources
A28GNDGround reference and return.Single source
Sources
A29PERp(3)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A30PERn(3)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A31GNDGround reference and return.Single source
Sources
A32NCNot connected or absent in this named wiring.Not connected
Sources
A33NCNot connected or absent in this named wiring.Not connected
Sources
A34GNDGround reference and return.Single source
Sources
A35PERp(4)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A36PERn(4)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A37GNDGround reference and return.Single source
Sources
A38GNDGround reference and return.Single source
Sources
A39PERp(5)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A40PERn(5)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A41GNDGround reference and return.Single source
Sources
A42GNDGround reference and return.Single source
Sources
A43PERp(6)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A44PERn(6)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A45GNDGround reference and return.Single source
Sources
A46GNDGround reference and return.Single source
Sources
A47PERp(7)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A48PERn(7)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
A49GNDGround reference and return.Single source
Sources
B1+12VPower connection (+12V). Check the specified supply.Single source
Sources
B2+12VPower connection (+12V). Check the specified supply.Single source
Sources
B3+12VPower connection (+12V). Check the specified supply.Single source
Sources
B4GNDGround reference and return.Single source
Sources
B5SMCLKClock or clock-control connection, as named by this source.Single source
Sources
B6SMDATControl, detection or configuration connection; check the source and device.Single source
Sources
B7GNDGround reference and return.Single source
Sources
B8+3.3VPower connection (+3.3V). Check the specified supply.Single source
Sources
B9JTAG1Control, detection or configuration connection; check the source and device.Single source
Sources
B103.3VauxPower connection (3.3Vaux). Check the specified supply.Single source
Sources
B11WAKE#Control, detection or configuration connection; check the source and device.Single source
Sources
B12CLKREQ#Clock or clock-control connection, as named by this source.Single source
Sources
B13GNDGround reference and return.Single source
Sources
B14PETp(0)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B15PETn(0)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B16GNDGround reference and return.Single source
Sources
B17PRSNT2#Control, detection or configuration connection; check the source and device.Single source
Sources
B18GNDGround reference and return.Single source
Sources
B19PETp(1)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B20PETn(1)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B21GNDGround reference and return.Single source
Sources
B22GNDGround reference and return.Single source
Sources
B23PETp(2)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B24PETn(2)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B25GNDGround reference and return.Single source
Sources
B26GNDGround reference and return.Single source
Sources
B27PETp(3)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B28PETn(3)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B29GNDGround reference and return.Single source
Sources
B30PWRBRK#Control, detection or configuration connection; check the source and device.Single source
Sources
B31PRSNT2#Control, detection or configuration connection; check the source and device.Single source
Sources
B32GNDGround reference and return.Single source
Sources
B33PETp(4)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B34PETn(4)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B35GNDGround reference and return.Single source
Sources
B36GNDGround reference and return.Single source
Sources
B37PETp(5)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B38PETn(5)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B39GNDGround reference and return.Single source
Sources
B40GNDGround reference and return.Single source
Sources
B41PETp(6)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B42PETn(6)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B43GNDGround reference and return.Single source
Sources
B44GNDGround reference and return.Single source
Sources
B45PETp(7)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B46PETn(7)Signal conductor. Pair, polarity and direction follow this named wiring.Single source
Sources
B47GNDGround reference and return.Single source
Sources
B48PRSNT2#Control, detection or configuration connection; check the source and device.Single source
Sources
B49GNDGround reference and return.Single source
Sources
Sources (1)

Mellanox ConnectX-3 Pro x8 card — source-scoped pin labels

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

Source schematic contact identities A1-A49 / B1-B49. The two columns are schematic symbol sides, not a verified mating-face or solder-side view.

  • P297 PCIe x8 — **Partial; reference-clock conflict remains** — A: 3M Gen 5 extender. B: Mellanox ConnectX-3 Pro, with PICMG used for the polarity discrepancy and routing context. Common eight-lane positions align; test-signal names and optional/reserved sidebands remain source-specific. A13/A14 are still unverified in B. No identical document was used across passes for the PCIe edge connectors.
  • This design guide is explicitly not a substitute for the PCI-SIG Card Electromechanical specification. No mechanical footprint or board mirror is supplied here.
  • A13/A14 reference-clock polarity conflicts between the PICMG guide and Mellanox manual remain unverified.
  • This is a source-scoped research map; PCI-SIG CEM normative revisions, later sideband assignments, exact card-side orientation and PCB termination mirrors were not independently established.
PCI Express x8 98-position card-edge engineering boundarySource schematic contact identities A1-A49 / B1-B49. The two columns are schematic symbol sides, not a verified mating-face or solder-side view.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manualA1: PRSNT1# (device_specific)A1A2: +12V (device_specific)A2A3: +12V (device_specific)A3A4: GND (device_specific)A4A5: TCK (device_specific)A5A6: TDI (device_specific)A6A7: TDO (device_specific)A7A8: TMS (device_specific)A8A9: +3.3V (device_specific)A9A10: +3.3V (device_specific)A10A11: PERST# (device_specific)A11A12: GND (device_specific)A12A13: Not confirmed (unverified)A13A14: Not confirmed (unverified)A14A15: GND (device_specific)A15A16: PERp0 (device_specific)A16A17: PERn0 (device_specific)A17A18: GND (device_specific)A18A19: RSVD (device_specific)A19A20: GND (device_specific)A20A21: PERp1 (device_specific)A21A22: PERn1 (device_specific)A22A23: GND (device_specific)A23A24: GND (device_specific)A24A25: PERp2 (device_specific)A25A26: PERn2 (device_specific)A26A27: GND (device_specific)A27A28: GND (device_specific)A28A29: PERp3 (device_specific)A29A30: PERn3 (device_specific)A30A31: GND (device_specific)A31A32: RSVD (device_specific)A32A33: RSVD (device_specific)A33A34: GND (device_specific)A34A35: PERp4 (device_specific)A35A36: PERn4 (device_specific)A36A37: GND (device_specific)A37A38: GND (device_specific)A38A39: PERp5 (device_specific)A39A40: PERn5 (device_specific)A40A41: GND (device_specific)A41A42: GND (device_specific)A42A43: PERp6 (device_specific)A43A44: PERn6 (device_specific)A44A45: GND (device_specific)A45A46: GND (device_specific)A46A47: PERp7 (device_specific)A47A48: PERn7 (device_specific)A48A49: GND (device_specific)A49B1: +12V (device_specific)B1B2: +12V (device_specific)B2B3: +12V (device_specific)B3B4: GND (device_specific)B4B5: SMCLK (device_specific)B5B6: SMDAT (device_specific)B6B7: GND (device_specific)B7B8: +3.3V (device_specific)B8B9: TRST# (device_specific)B9B10: 3.3VAUX (device_specific)B10B11: WAKE#/OBFF (device_specific)B11B12: RSVD (device_specific)B12B13: GND (device_specific)B13B14: PETp0 (device_specific)B14B15: PETn0 (device_specific)B15B16: GND (device_specific)B16B17: PRSNT2# (device_specific)B17B18: GND (device_specific)B18B19: PETp1 (device_specific)B19B20: PETn1 (device_specific)B20B21: GND (device_specific)B21B22: GND (device_specific)B22B23: PETp2 (device_specific)B23B24: PETn2 (device_specific)B24B25: GND (device_specific)B25B26: GND (device_specific)B26B27: PETp3 (device_specific)B27B28: PETn3 (device_specific)B28B29: GND (device_specific)B29B30: RSVD (device_specific)B30B31: PRSNT2# (device_specific)B31B32: GND (device_specific)B32B33: PETp4 (device_specific)B33B34: PETn4 (device_specific)B34B35: GND (device_specific)B35B36: GND (device_specific)B36B37: PETp5 (device_specific)B37B38: PETn5 (device_specific)B38B39: GND (device_specific)B39B40: GND (device_specific)B40B41: PETp6 (device_specific)B41B42: PETn6 (device_specific)B42B43: GND (device_specific)B43B44: GND (device_specific)B44B45: PETp7 (device_specific)B45B46: PETn7 (device_specific)B46B47: GND (device_specific)B47B48: PRSNT2# (device_specific)B48B49: GND (device_specific)B49powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Mellanox ConnectX-3 Pro x8 card — source-scoped pin labels — source-scoped contact map
PinSignalWhat it doesStatus
A1PRSNT1#Control, detection or configuration connection; check the source and device.Device-specific
Sources
A2+12VPower connection (+12V). Check the specified supply.Device-specific
Sources
A3+12VPower connection (+12V). Check the specified supply.Device-specific
Sources
A4GNDGround reference and return.Device-specific
Sources
A5TCKControl, detection or configuration connection; check the source and device.Device-specific
Sources
A6TDIControl, detection or configuration connection; check the source and device.Device-specific
Sources
A7TDOControl, detection or configuration connection; check the source and device.Device-specific
Sources
A8TMSControl, detection or configuration connection; check the source and device.Device-specific
Sources
A9+3.3VPower connection (+3.3V). Check the specified supply.Device-specific
Sources
A10+3.3VPower connection (+3.3V). Check the specified supply.Device-specific
Sources
A11PERST#Reset control; check active level and the named device.Device-specific
Sources
A12GNDGround reference and return.Device-specific
Sources
A13Not confirmedNo settled assignment. Do not wire from this row.Unverified
Sources
A14Not confirmedNo settled assignment. Do not wire from this row.Unverified
Sources
A15GNDGround reference and return.Device-specific
Sources
A16PERp0Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A17PERn0Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A18GNDGround reference and return.Device-specific
Sources
A19RSVDReserved; no general-purpose wiring is established.Device-specific
Sources
A20GNDGround reference and return.Device-specific
Sources
A21PERp1Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A22PERn1Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A23GNDGround reference and return.Device-specific
Sources
A24GNDGround reference and return.Device-specific
Sources
A25PERp2Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A26PERn2Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A27GNDGround reference and return.Device-specific
Sources
A28GNDGround reference and return.Device-specific
Sources
A29PERp3Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A30PERn3Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A31GNDGround reference and return.Device-specific
Sources
A32RSVDReserved; no general-purpose wiring is established.Device-specific
Sources
A33RSVDReserved; no general-purpose wiring is established.Device-specific
Sources
A34GNDGround reference and return.Device-specific
Sources
A35PERp4Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A36PERn4Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A37GNDGround reference and return.Device-specific
Sources
A38GNDGround reference and return.Device-specific
Sources
A39PERp5Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A40PERn5Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A41GNDGround reference and return.Device-specific
Sources
A42GNDGround reference and return.Device-specific
Sources
A43PERp6Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A44PERn6Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A45GNDGround reference and return.Device-specific
Sources
A46GNDGround reference and return.Device-specific
Sources
A47PERp7Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A48PERn7Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
A49GNDGround reference and return.Device-specific
Sources
B1+12VPower connection (+12V). Check the specified supply.Device-specific
Sources
B2+12VPower connection (+12V). Check the specified supply.Device-specific
Sources
B3+12VPower connection (+12V). Check the specified supply.Device-specific
Sources
B4GNDGround reference and return.Device-specific
Sources
B5SMCLKClock or clock-control connection, as named by this source.Device-specific
Sources
B6SMDATControl, detection or configuration connection; check the source and device.Device-specific
Sources
B7GNDGround reference and return.Device-specific
Sources
B8+3.3VPower connection (+3.3V). Check the specified supply.Device-specific
Sources
B9TRST#Reset control; check active level and the named device.Device-specific
Sources
B103.3VAUXPower connection (3.3VAUX). Check the specified supply.Device-specific
Sources
B11WAKE#/OBFFControl, detection or configuration connection; check the source and device.Device-specific
Sources
B12RSVDReserved; no general-purpose wiring is established.Device-specific
Sources
B13GNDGround reference and return.Device-specific
Sources
B14PETp0Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B15PETn0Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B16GNDGround reference and return.Device-specific
Sources
B17PRSNT2#Control, detection or configuration connection; check the source and device.Device-specific
Sources
B18GNDGround reference and return.Device-specific
Sources
B19PETp1Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B20PETn1Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B21GNDGround reference and return.Device-specific
Sources
B22GNDGround reference and return.Device-specific
Sources
B23PETp2Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B24PETn2Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B25GNDGround reference and return.Device-specific
Sources
B26GNDGround reference and return.Device-specific
Sources
B27PETp3Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B28PETn3Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B29GNDGround reference and return.Device-specific
Sources
B30RSVDReserved; no general-purpose wiring is established.Device-specific
Sources
B31PRSNT2#Control, detection or configuration connection; check the source and device.Device-specific
Sources
B32GNDGround reference and return.Device-specific
Sources
B33PETp4Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B34PETn4Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B35GNDGround reference and return.Device-specific
Sources
B36GNDGround reference and return.Device-specific
Sources
B37PETp5Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B38PETn5Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B39GNDGround reference and return.Device-specific
Sources
B40GNDGround reference and return.Device-specific
Sources
B41PETp6Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B42PETn6Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B43GNDGround reference and return.Device-specific
Sources
B44GNDGround reference and return.Device-specific
Sources
B45PETp7Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B46PETn7Signal conductor. Pair, polarity and direction follow this named wiring.Device-specific
Sources
B47GNDGround reference and return.Device-specific
Sources
B48PRSNT2#Control, detection or configuration connection; check the source and device.Device-specific
Sources
B49GNDGround reference and return.Device-specific
Sources
Sources (2)

Unknowns stay unknown.

  • The card-edge form does not by itself establish PCIe generation, active lanes, bifurcation, electrical compliance, power budget or motherboard behavior.
  • Pitch and position count do not constitute a fabrication drawing, slot-compliance gauge or board-layout approval.

Your next step

Use the detail without guessing past its limits.

Read the connector field note Recognition clues and practical checks.Work through a connection Keep exact equipment and cable requirements separate.

Source trail

Claims and sources

C809Ysource checked

Mellanox ConnectX-3 Pro x8 card — source-scoped pin labels: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

PICMG (manufacturer-hosted copy: Kontron) · COM Express Carrier Board Design Guide ↗
p. 37 Figure 7 PCI Express x1 Slot Example, J1 B3; p. 38, section 2.3.5.4, Figure 8 PCI Express x4 Slot Example, J2 contacts; p. 47 section 2.3.6.1 Polarity Inversion; p. 47 section 2.3.6.1 Polarity Inversion; p. 38 Figure 8 J2 A29/A30; p. 52, section 2.4.3.1, Figure 18 x1, x4, x8, x16 Slot, J5 connector-symbol pin labels · Source scope and unresolved evidence are preserved in the engineering variant.

Mellanox Technologies (NVIDIA official host) · ConnectX-3 Pro Ethernet Single and Dual SFP+ Port Adapter Card User Manual ↗
p. 55, Appendix A.2, Figure 15 PCIe Connector Pinout, J6 A13/A14 reference-clock labels; p. 55, Appendix A.2, Figure 15 PCIe Connector Pinout, all J6 contacts B1-B49/A1-A49 · Source scope and unresolved evidence are preserved in the engineering variant.

5 source records support this profile. No independent engineering review or hardware validation is claimed.

Discovery Quality III

Questions this record helps answer

All focused explainers →
PCIe slot size vs lane count and generationDoes the physical PCIe slot or card-edge size prove how many lanes are active or which PCIe generation the system supports?

Evidence behind this page

Scope first. Source second. Approval separate.

5 linked sources · 4 scoped claims · 0 sources with inspection/access flags.

Page scope: Original V51 engineering boundary schematic; not to scale and not a PCIe logical pinout, slot gauge or manufacturing drawing.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-04. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 5 source scopes, access limits and dates

S338 · Amphenol PCI Express card-edge series — x8 98-position form

Amphenol Communications Solutions · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Manufacturer series reference for the PCI Express x8 mechanical/contact-count form only.

Not established / limitations: Source-backed identification does not establish universal wiring, protocol generation, device compatibility, safe installation or fabrication approval.

Locator: Product-series description and standard pin-count/lane-width summary

S357 · Amphenol PCI Express Gen 3 Card Edge Connectors engineering reference

Amphenol Communications Solutions · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Manufacturer-series context for PCIe x1/x4/x8 card-edge contact counts and 1.00 mm pitch only.

Not established / limitations: Pitch and position count do not establish PCIe generation, lane enablement, bifurcation, board layout, electrical compliance or fabrication approval.

Locator: Series overview: 1.00 mm pitch and standard 36/64/98/164/280 position counts

S825 · 3M Twin Axial PCI Express Extender Assemblies Gen 5.0 / PCIe Extender Cable Assy Gen 5

3M · Manufacturer / product-owner domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: sheet 5 of 6, X16 PINOUT TABLE, Side B and Side A columns; sheet 5 of 6, X8 PINOUT TABLE, Side B and Side A columns

S826 · COM Express Carrier Board Design Guide

PICMG (manufacturer-hosted copy: Kontron) · Unclassified publisher domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: p. 37 Figure 7 PCI Express x1 Slot Example, J1 B3; p. 38, section 2.3.5.4, Figure 8 PCI Express x4 Slot Example, J2 contacts; p. 47 section 2.3.6.1 Polarity Inversion; p. 47 section 2.3.6.1 Polarity Inversion; p. 38 Figure 8 J2 A29/A30; p. 52, section 2.4.3.1, Figure 18 x1, x4, x8, x16 Slot, J5 connector-symbol pin labels

S827 · ConnectX-3 Pro Ethernet Single and Dual SFP+ Port Adapter Card User Manual

Mellanox Technologies (NVIDIA official host) · Unclassified publisher domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: p. 55, Appendix A.2, Figure 15 PCIe Connector Pinout, J6 A13/A14 reference-clock labels; p. 55, Appendix A.2, Figure 15 PCIe Connector Pinout, all J6 contacts B1-B49/A1-A49

Trace 4 claims to their source records

C297A · P297

Amphenol identifies the standard PCI Express x8 card-edge connector form with 98 positions/contacts in its PCIe connector range.

Claim scope: V50 identification fact only; no wiring, protocol compatibility, installation or fabrication approval is inferred.

Source links: S338 · Evidence trail → (private workspace)

C297B · P297

Amphenol’s PCI Express card-edge series identifies a 98-position x8 connector at 1.00 mm pitch.

Claim scope: Mechanical/contact-count context only; no PCIe generation, lane enablement, logical pin assignment or board-layout approval is inferred.

Source links: S357 · Evidence trail → (private workspace)

C809X · P297

3M Gen 5 PCIe x8 extender pinout: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S825 · Evidence trail → (private workspace)

C809Y · P297

Mellanox ConnectX-3 Pro x8 card — source-scoped pin labels: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S826 · S827 · Evidence trail → (private workspace)

Prepare this page for review → (private workspace)Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.