The useful distinction
Recognize it. Then verify it.
Amphenol documents the PCI Express x8 card-edge form with 98 positions in its standard connector range. [C297A]
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.
| Nominal contacts | 98S338Source-backed nominal position/contact count for identification: 98. Not a pinout or manufacturing drawing. |
|---|---|
| Positions / cavity span | 98 (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 pitch | 1 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 role | card-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. |
| Manufacturer | Amphenol 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. |
| Series | PCI 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.
Bounded facts, visible unknowns
Specifications and limits
| Documented identification | Amphenol identifies the standard PCI Express x8 card-edge connector form with 98 positions/contacts in its PCIe connector range. [C297A] |
|---|---|
| Mechanical dimensions | No independently reviewed mechanical drawing in V50; do not use this page for fabrication, fit testing or tolerance work. |
| Engineering pinout | Source-checked engineering profile available; independent review pending. Open engineering profile → |
| Verified device list | Not included. Check exact device and accessory documentation. |
Use only the source-backed family, role or position count for identification. Resolve electrical ratings, protocol generation, lane wiring, signal assignment, cable construction and exact device support from the relevant equipment and component documentation.
Before you connect
What to check
- Identify the exact connector family and variant from the equipment or component documentation.
- Keep physical form, contact count, protocol, electrical rating and device support as separate facts.
- Do not force, rewire, adapt or install from this recognition record; resolve the remaining requirements first.
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.
What is not established
This field note does not approve a connection, adapter, cable assembly, rewiring scheme, energized-work procedure or fabricated part. It intentionally omits unsupported pin assignments and mechanical tolerances.
Your next step
Move from the form to the requirement.
The source trail
Evidence for this page
AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.
Amphenol identifies the standard PCI Express x8 card-edge connector form with 98 positions/contacts in its PCIe connector range.
Amphenol Communications Solutions · Amphenol PCI Express card-edge series — x8 98-position form ↗S338: full source recordInspect review dependencies → (private workspace)
