FIELD GUIDESource-led reference

E192 · Source-scoped pinout variants

PCIe 8-pin auxiliary power connector engineering reference

Intel ATX Version 3.0 legacy PCIe 2x4 auxiliary-power assignment.

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

PCIe 8-pin auxiliary-power logical assignment original orientation schematic
Original pinout diagram; read the exact variant and view below. Not to scale.

Orientation

How to read this profile

Logical table numbering from Intel Table 5-5; V37 does not convert the table into a physical face-view locator.

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 contacts8S199Documented position count only; no V36 electrical pin map.
Positions / cavity span8 (Claim C192C)S474Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Do not infer cable role solely from the equipment category or position count.
Contact rows2 (Source-described array; C192A); 2 (Source-described array; C192B); 2 (Source-described array; C192E)S199 · S216 · S561Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V36 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction or end-to-end compatibility proof. V37 engineering-depth sidecar fact; source-checked but not independently human-approved, not a fabrication drawing, and not a safe-substitution or repair instruction. Printed page 59 only. The guide-specific connection description is not a PSU-side socket assignment or permission to reuse an unknown cable.
Contact pitch4.2 mm manufacturer-reported centerline or mating-interface pitch (NVIDIA GRID K2 eight-pin PCIe power header)S765Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example NVIDIA GRID K2 eight-pin PCIe power header: Device-specific board header. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Named2013board example only. Do not treat as every modernGPUheader geometry or modularPSU pinout.
Dimensions / axis18 ± 0.25 mm housing width (NVIDIA GRID K2 eight-pin PCIe power header); 11.4 ± 0.25 mm housing height (NVIDIA GRID K2 eight-pin PCIe power header); 18.1 ± 0.25 mm front-to-rear overall connector extent including formed PCB tails (NVIDIA GRID K2 eight-pin PCIe power header)S765Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example NVIDIA GRID K2 eight-pin PCIe power header: Device-specific board header. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Named2013board example only. Do not treat as every modernGPUheader geometry or modularPSU pinout.
Connector roleplug; headerS199 · S216Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. PCIe auxiliary-power cable plug / add-in-card header interface
Mountingboard (Claim C192E)S561Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Printed page 59 only. The guide-specific connection description is not a PSU-side socket assignment or permission to reuse an unknown cable.
Keying / polarizationposition1indicator and alignment rib shown in Figure7 (NVIDIA GRID K2 eight-pin PCIe power header)S765Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example NVIDIA GRID K2 eight-pin PCIe power header: Device-specific board header. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Named2013board example only. Do not treat as every modernGPUheader geometry or modularPSU pinout.
Exact part / implementationNVIDIA GRID K2 eight-pin PCIe power header (NVIDIA GRID K2 eight-pin PCIe power header)S765Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example NVIDIA GRID K2 eight-pin PCIe power header: Device-specific board header. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Named2013board example only. Do not treat as every modernGPUheader geometry or modularPSU pinout.
View conventionFigure7 front/side/section views of board header; position1indicator and alignment rib explicit; not cable wire-entry map (NVIDIA GRID K2 eight-pin PCIe power header)S765Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example NVIDIA GRID K2 eight-pin PCIe power header: Device-specific board header. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Named2013board example only. Do not treat as every modernGPUheader geometry or modularPSU pinout.

Not recorded: Populated contacts, Contact gender / arrangement, Coupling / latch, Shell / form, Manufacturer, Series, Recorded markings. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Recorded variant and source limits
  • No mating-face orientation or key geometry is inferred from the assignment table.
  • The 2x4 add-in-card header may accept a documented 2x3 plug in the Intel design context; this does not authorize arbitrary cable substitutions.
  • Modular PSU-side pinouts are outside this profile.
  • Intel ATX v3 PSU PCIe 2x4 (150 W) cable plug: Contact numbers per Table 5-5.
  • GIGABYTE GP-UD850GM-A PG5 modular PCIe 6+2 cable, VGA (card) end: Drawing on the cited page.
  • Intel rev 2.1a PCIe 2x4, 150 W: Numbered assignments only. The retrieved Intel section supplies a table but no numbered mating-face or wire-side drawing; spatial orientation is UNVERIFIED. Do not mirror these numbers onto an unidentified cable end.
  • NVIDIA GRID K2 eight-pin auxiliary connector: NVIDIA Figure 7 board-header drawing and its POSITION #1 INDICATOR; Table 3 supplies the numbered signals. Cable rear view is not established.
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

Intel ATX v3 PSU PCIe 2x4 (150 W) cable plug

View and evidence limits

Contact numbers per Table 5-5.

  • P192 PCIe 8-pin — **Agree**: 1-3 +12 V, 4 SENSE1, 6 SENSE0, 5/7/8 return — Same Intel rev 2.1a in both. B adds NVIDIA GRID K2; A adds GIGABYTE's card-end cable diagram, which labels grounded sense positions as GND. EPS12V and modular PSU-end wiring are different uses.
  • The PCI Express CEM specification is PCI-SIG member-only (paywalled) and was not read.
PCIe 8-pin auxiliary-power logical assignmentContact numbers per Table 5-5.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: +12V3/V4 (confirmed)12: +12V3/V4 (confirmed)23: +12V3/V4 (confirmed)34: SENSE1 (confirmed)45: COM (confirmed)56: SENSE0 (confirmed)67: COM (confirmed)78: COM (confirmed)8powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Intel ATX v3 PSU PCIe 2x4 (150 W) cable plug — source-scoped contact map
PinSignalWhat it doesStatus
1+12V3/V4Power connection (+12V3/V4). Check the specified supply.Confirmed
Sources
2+12V3/V4Power connection (+12V3/V4). Check the specified supply.Confirmed
Sources
3+12V3/V4Power connection (+12V3/V4). Check the specified supply.Confirmed
Sources
4SENSE1Control, detection or configuration connection; check the source and device.Confirmed
Sources
5COMGround reference and return.Confirmed
Sources
6SENSE0Control, detection or configuration connection; check the source and device.Confirmed
Sources
7COMGround reference and return.Confirmed
Sources
8COMGround reference and return.Confirmed
Sources
Sources (3)

GIGABYTE GP-UD850GM-A PG5 modular PCIe 6+2 cable, VGA (card) end

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

View and evidence limits

Drawing on the cited page.

  • P192 PCIe 8-pin — **Agree**: 1-3 +12 V, 4 SENSE1, 6 SENSE0, 5/7/8 return — Same Intel rev 2.1a in both. B adds NVIDIA GRID K2; A adds GIGABYTE's card-end cable diagram, which labels grounded sense positions as GND. EPS12V and modular PSU-end wiring are different uses.
  • The PSU-side end of this modular cable uses a vendor-specific 8-pin assignment (1-4 GND, 5-7 +12V, 8 NC); it is not the PCIe 8-pin connector and is not recorded as a P192 variant.
  • The PCI Express CEM specification is PCI-SIG member-only (paywalled) and was not read.
PCIe 8-pin auxiliary-power logical assignmentDrawing on the cited page.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: +12V (device_specific)12: +12V (device_specific)23: +12V (device_specific)34: GND (device_specific)45: GND (device_specific)56: GND (device_specific)67: GND (device_specific)78: GND (device_specific)8powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
GIGABYTE GP-UD850GM-A PG5 modular PCIe 6+2 cable, VGA (card) end — source-scoped contact map
PinSignalWhat it doesStatus
1+12VPower connection (+12V). Check the specified supply.Device-specific
Sources
2+12VPower connection (+12V). Check the specified supply.Device-specific
Sources
3+12VPower connection (+12V). Check the specified supply.Device-specific
Sources
4GNDGround reference and return.Device-specific
Sources
5GNDGround reference and return.Device-specific
Sources
6GNDGround reference and return.Device-specific
Sources
7GNDGround reference and return.Device-specific
Sources
8GNDGround reference and return.Device-specific
Sources
Sources (1)

Intel rev 2.1a PCIe 2x4, 150 W

View and evidence limits

Numbered assignments only. The retrieved Intel section supplies a table but no numbered mating-face or wire-side drawing; spatial orientation is UNVERIFIED. Do not mirror these numbers onto an unidentified cable end.

  • P192 PCIe 8-pin — **Agree**: 1-3 +12 V, 4 SENSE1, 6 SENSE0, 5/7/8 return — Same Intel rev 2.1a in both. B adds NVIDIA GRID K2; A adds GIGABYTE's card-end cable diagram, which labels grounded sense positions as GND. EPS12V and modular PSU-end wiring are different uses.
  • Table 5-6 Sense1/Sense0: ground/ground = 150 W; open/ground = 75 W with 2x3 cable; open/open = no cable; ground/open is reserved.
  • Bare-shell identity, proprietary PSU endpoints and EPS12V wiring are not established by these PCIe variants.
PCIe 8-pin auxiliary-power logical assignmentNumbered assignments only. The retrieved Intel section supplies a table but no numbered mating-face or wire-side drawing; spatial orientation is UNVERIFIED. Do not mirror these numbers onto an unidentified cable end.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: +12V3/V4 (confirmed)12: +12V3/V4 (confirmed)23: +12V3/V4 (confirmed)34: SENSE1 (confirmed)45: COM (confirmed)56: SENSE0 (confirmed)67: COM (confirmed)78: COM (confirmed)8powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Intel rev 2.1a PCIe 2x4, 150 W — source-scoped contact map
PinSignalWhat it doesStatus
1+12V3/V4Power connection (+12V3/V4). Check the specified supply.Confirmed
Sources
2+12V3/V4Power connection (+12V3/V4). Check the specified supply.Confirmed
Sources
3+12V3/V4Power connection (+12V3/V4). Check the specified supply.Confirmed
Sources
4SENSE1Control, detection or configuration connection; check the source and device.Confirmed
Sources
5COMGround reference and return.Confirmed
Sources
6SENSE0Control, detection or configuration connection; check the source and device.Confirmed
Sources
7COMGround reference and return.Confirmed
Sources
8COMGround reference and return.Confirmed
Sources
Sources (3)

NVIDIA GRID K2 eight-pin auxiliary connector

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

View and evidence limits

NVIDIA Figure 7 board-header drawing and its POSITION #1 INDICATOR; Table 3 supplies the numbered signals. Cable rear view is not established.

  • P192 PCIe 8-pin — **Agree**: 1-3 +12 V, 4 SENSE1, 6 SENSE0, 5/7/8 return — Same Intel rev 2.1a in both. B adds NVIDIA GRID K2; A adds GIGABYTE's card-end cable diagram, which labels grounded sense positions as GND. EPS12V and modular PSU-end wiring are different uses.
  • Bare-shell identity, proprietary PSU endpoints and EPS12V wiring are not established by these PCIe variants.
PCIe 8-pin auxiliary-power logical assignmentNVIDIA Figure 7 board-header drawing and its POSITION #1 INDICATOR; Table 3 supplies the numbered signals. Cable rear view is not established.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1: +12 V (device_specific)12: +12 V (device_specific)23: +12 V (device_specific)34: Sense1 (device_specific)45: GND (device_specific)56: Sense0 (device_specific)67: GND (device_specific)78: GND (device_specific)8powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
NVIDIA GRID K2 eight-pin auxiliary connector — source-scoped contact map
PinSignalWhat it doesStatus
1+12 VPower connection (+12 V). Check the specified supply.Device-specific
Sources
2+12 VPower connection (+12 V). Check the specified supply.Device-specific
Sources
3+12 VPower connection (+12 V). Check the specified supply.Device-specific
Sources
4Sense1Control, detection or configuration connection; check the source and device.Device-specific
Sources
5GNDGround reference and return.Device-specific
Sources
6Sense0Control, detection or configuration connection; check the source and device.Device-specific
Sources
7GNDGround reference and return.Device-specific
Sources
8GNDGround reference and return.Device-specific
Sources
Sources (2)

Unknowns stay unknown.

  • No mating-face orientation or key geometry is inferred from the assignment table.
  • The 2x4 add-in-card header may accept a documented 2x3 plug in the Intel design context; this does not authorize arbitrary cable substitutions.
  • Modular PSU-side pinouts are outside this profile.

Your next step

Use the detail without guessing past its limits.

Source trail

Claims and sources

C192Asource checked

Intel documents a 2x4 PCIe add-in-card auxiliary-power connector form in the cited ATX design guide.

Intel · ATX Version 3.0 — PCI Express add-in card connectors ↗
PCIe auxiliary power connector section · Identification/reference scope only. V36 does not convert this source into a universal pinout, fabrication drawing, electrical approval or end-to-end compatibility verdict.

C192Bsource checked

Intel ATX Version 3.0 Table 5-5 assigns the PCIe 2x4 auxiliary connector as pins 1–3 +12V3/V4, pin 4 Sense1, pin 5 COM, pin 6 Sense0, and pins 7–8 COM.

Intel · ATX Version 3.0 — PCIe auxiliary power connector assignments ↗
Tables 5-4, 5-5 and 5-7; 12VHPWR connector description · Exact ATX 3.0 design-guide scope only. 12VHPWR is retained as the documented historical form and must not be silently generalized to later 12V-2x6 revisions or proprietary modular-PSU connectors.

C806Nsource checked

Intel ATX v3 PSU PCIe 2x4 (150 W) cable plug: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide ↗
Revision history entry for 2.1 (printed p. 13): 12VHPWR renamed 12V-2x6 throughout, 'Cable Plug' side unchanged; Section 5.2.2.4.3 'Special Note on 12V-2x6 vs. 12VHPWR connectors' (printed p. 61); Table 5-7 (printed p. 66); Section 5.2.2.1, Table 5-1 Main Power Connector Pin-Out, printed p. 55; Section 5.2.2.2 Peripheral Connectors (AMP 1-480424-0 or Molex 15-24-4048), Table 5-2 Peripheral Connector Pin-out, printed pp. 55-56; Section 5.2.2.3 Floppy Drive Connector - Do Not Include (For Historical Reference Only), AMP 171822-4, Table 5-3 Floppy Connector Pin-out, printed p. 56; Section 5.2.2.4.1, Table 5-4 PCIe 2x3 Auxiliary Power Connector Pin Assignment (75 watts) and note 2, printed p. 57; Section 5.2.2.4.2, Table 5-5 PCIe 2x4 Auxiliary Power Connector Pin Assignment (150 Watts) and Table 5-6 Sense Pin Decoding, printed p. 58; Section 5.2.2.4.3, Table 5-7 PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts), printed p. 66; sideband definitions Section 3.3 and Table 3-6, printed pp. 29-32; Section 5.2.2.5, Table 5-9 +12 V Power 8 pin Connector Pin-Out, printed p. 67 · Source scope and unresolved evidence are preserved in the engineering variant.

Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide ↗
Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, 12V-2x6 subsection, Table 5-7: PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts); Figure 5-6: PCB Header Dimensions — Front View; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x3 subsection, Table 5-4 and following Sense paragraph; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x4 subsection, Tables 5-5 and 5-6 and adjacent sense-grounding paragraphs · Source scope and unresolved evidence are preserved in the engineering variant.

NVIDIA · NVIDIA GRID K2 Graphics Board — Board Specification ↗
printed p.10 (PDF p.14), Table 2: 6-Pin PCI Express Power Connector Pinout; printed p.8 (PDF p.12), Figure 6; printed p.10 (PDF p.14), Table 3: 8-Pin PCI Express Power Connector Pinout; printed p.9 (PDF p.13), Figure 7 · Source scope and unresolved evidence are preserved in the engineering variant.

C806Osource checked

GIGABYTE GP-UD850GM-A PG5 modular PCIe 6+2 cable, VGA (card) end: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

GIGA-BYTE Technology · PSU Pinout Diagram - GP-UD850GM-A PG5 ↗
Page 'PCI-E 16 Pin', pin table and drawing; Page 'PCI-E 6+2 Pin', 'VGA Side' table and drawing · Source scope and unresolved evidence are preserved in the engineering variant.

C806Psource checked

Intel rev 2.1a PCIe 2x4, 150 W: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide ↗
Revision history entry for 2.1 (printed p. 13): 12VHPWR renamed 12V-2x6 throughout, 'Cable Plug' side unchanged; Section 5.2.2.4.3 'Special Note on 12V-2x6 vs. 12VHPWR connectors' (printed p. 61); Table 5-7 (printed p. 66); Section 5.2.2.1, Table 5-1 Main Power Connector Pin-Out, printed p. 55; Section 5.2.2.2 Peripheral Connectors (AMP 1-480424-0 or Molex 15-24-4048), Table 5-2 Peripheral Connector Pin-out, printed pp. 55-56; Section 5.2.2.3 Floppy Drive Connector - Do Not Include (For Historical Reference Only), AMP 171822-4, Table 5-3 Floppy Connector Pin-out, printed p. 56; Section 5.2.2.4.1, Table 5-4 PCIe 2x3 Auxiliary Power Connector Pin Assignment (75 watts) and note 2, printed p. 57; Section 5.2.2.4.2, Table 5-5 PCIe 2x4 Auxiliary Power Connector Pin Assignment (150 Watts) and Table 5-6 Sense Pin Decoding, printed p. 58; Section 5.2.2.4.3, Table 5-7 PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts), printed p. 66; sideband definitions Section 3.3 and Table 3-6, printed pp. 29-32; Section 5.2.2.5, Table 5-9 +12 V Power 8 pin Connector Pin-Out, printed p. 67 · Source scope and unresolved evidence are preserved in the engineering variant.

Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide ↗
Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, 12V-2x6 subsection, Table 5-7: PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts); Figure 5-6: PCB Header Dimensions — Front View; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x3 subsection, Table 5-4 and following Sense paragraph; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x4 subsection, Tables 5-5 and 5-6 and adjacent sense-grounding paragraphs · Source scope and unresolved evidence are preserved in the engineering variant.

GIGA-BYTE Technology · PSU Pinout Diagram - GP-UD850GM-A PG5 ↗
Page 'PCI-E 16 Pin', pin table and drawing; Page 'PCI-E 6+2 Pin', 'VGA Side' table and drawing · Source scope and unresolved evidence are preserved in the engineering variant.

C806Qsource checked

NVIDIA GRID K2 eight-pin auxiliary connector: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide ↗
Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, 12V-2x6 subsection, Table 5-7: PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts); Figure 5-6: PCB Header Dimensions — Front View; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x3 subsection, Table 5-4 and following Sense paragraph; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x4 subsection, Tables 5-5 and 5-6 and adjacent sense-grounding paragraphs · Source scope and unresolved evidence are preserved in the engineering variant.

NVIDIA · NVIDIA GRID K2 Graphics Board — Board Specification ↗
printed p.10 (PDF p.14), Table 2: 6-Pin PCI Express Power Connector Pinout; printed p.8 (PDF p.12), Figure 6; printed p.10 (PDF p.14), Table 3: 8-Pin PCI Express Power Connector Pinout; printed p.9 (PDF p.13), Figure 7 · Source scope and unresolved evidence are preserved in the engineering variant.

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

Evidence behind this page

Scope first. Source second. Approval separate.

6 linked sources · 6 scoped claims · 0 sources with inspection/access flags.

Page scope: Original V37 logical-assignment schematic; not to scale and not a mating-face or manufacturing drawing.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-03. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 6 source scopes, access limits and dates

S199 · ATX Version 3.0 — PCI Express add-in card connectors

Intel · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Identifies legacy 2x3 and 2x4 PCIe auxiliary-power forms and the 12VHPWR form with twelve larger power contacts plus four smaller sideband contacts.

Not established / limitations: Identification/reference scope only. V36 does not convert this source into a universal pinout, fabrication drawing, electrical approval or end-to-end compatibility verdict.

Locator: PCIe auxiliary power connector section

S216 · ATX Version 3.0 — PCIe auxiliary power connector assignments

Intel · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Engineering-sidecar source for legacy PCIe 2x3/2x4 assignments and the ATX 3.0 12VHPWR 12+4 assignment/3.0 mm power-contact spacing context.

Not established / limitations: Exact ATX 3.0 design-guide scope only. 12VHPWR is retained as the documented historical form and must not be silently generalized to later 12V-2x6 revisions or proprietary modular-PSU connectors.

Locator: Tables 5-4, 5-5 and 5-7; 12VHPWR connector description

S755 · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide

Intel Corporation · Manufacturer / product-owner domain · inspected 2026-10-20 · due 2027-01-18

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: Revision history entry for 2.1 (printed p. 13): 12VHPWR renamed 12V-2x6 throughout, 'Cable Plug' side unchanged; Section 5.2.2.4.3 'Special Note on 12V-2x6 vs. 12VHPWR connectors' (printed p. 61); Table 5-7 (printed p. 66); Section 5.2.2.1, Table 5-1 Main Power Connector Pin-Out, printed p. 55; Section 5.2.2.2 Peripheral Connectors (AMP 1-480424-0 or Molex 15-24-4048), Table 5-2 Peripheral Connector Pin-out, printed pp. 55-56; Section 5.2.2.3 Floppy Drive Connector - Do Not Include (For Historical Reference Only), AMP 171822-4, Table 5-3 Floppy Connector Pin-out, printed p. 56; Section 5.2.2.4.1, Table 5-4 PCIe 2x3 Auxiliary Power Connector Pin Assignment (75 watts) and note 2, printed p. 57; Section 5.2.2.4.2, Table 5-5 PCIe 2x4 Auxiliary Power Connector Pin Assignment (150 Watts) and Table 5-6 Sense Pin Decoding, printed p. 58; Section 5.2.2.4.3, Table 5-7 PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts), printed p. 66; sideband definitions Section 3.3 and Table 3-6, printed pp. 29-32; Section 5.2.2.5, Table 5-9 +12 V Power 8 pin Connector Pin-Out, printed p. 67

S764 · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide

Intel Corporation · 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: Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, 12V-2x6 subsection, Table 5-7: PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts); Figure 5-6: PCB Header Dimensions — Front View; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x3 subsection, Table 5-4 and following Sense paragraph; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x4 subsection, Tables 5-5 and 5-6 and adjacent sense-grounding paragraphs

S765 · NVIDIA GRID K2 Graphics Board — Board Specification

NVIDIA · 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: printed p.10 (PDF p.14), Table 2: 6-Pin PCI Express Power Connector Pinout; printed p.8 (PDF p.12), Figure 6; printed p.10 (PDF p.14), Table 3: 8-Pin PCI Express Power Connector Pinout; printed p.9 (PDF p.13), Figure 7

S766 · PSU Pinout Diagram - GP-UD850GM-A PG5

GIGA-BYTE Technology · Unclassified publisher domain · inspected 2026-10-20 · due 2027-01-18

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: Page 'PCI-E 16 Pin', pin table and drawing; Page 'PCI-E 6+2 Pin', 'VGA Side' table and drawing

Trace 6 claims to their source records

C192A · P192

Intel documents a 2x4 PCIe add-in-card auxiliary-power connector form in the cited ATX design guide.

Claim scope: V36 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction or end-to-end compatibility proof.

Source links: S199 · Evidence trail → (private workspace)

C192B · P192

Intel ATX Version 3.0 Table 5-5 assigns the PCIe 2x4 auxiliary connector as pins 1–3 +12V3/V4, pin 4 Sense1, pin 5 COM, pin 6 Sense0, and pins 7–8 COM.

Claim scope: V37 engineering-depth sidecar fact; source-checked but not independently human-approved, not a fabrication drawing, and not a safe-substitution or repair instruction.

Source links: S216 · Evidence trail → (private workspace)

C806N · P192

Intel ATX v3 PSU PCIe 2x4 (150 W) cable plug: 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: S755 · S764 · S765 · Evidence trail → (private workspace)

C806O · P192

GIGABYTE GP-UD850GM-A PG5 modular PCIe 6+2 cable, VGA (card) end: 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: S766 · Evidence trail → (private workspace)

C806P · P192

Intel rev 2.1a PCIe 2x4, 150 W: 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: S755 · S764 · S766 · Evidence trail → (private workspace)

C806Q · P192

NVIDIA GRID K2 eight-pin auxiliary connector: 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: S764 · S765 · 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.