USB 3.1 Front-Panel Internal Cable and Connector Implementation Document, Rev. 1.1 — engineering inspection

Scope and location

Primary specification inspection for the Key-A 20-pin header/plug: keying, non-reversible internal cable behavior, front-of-header orientation and the one-USB-Type-C pin assignment P1–P20.

Sections 2.1, 2.3 and 3.2.1; Figure 3-1 on document page 19

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Inspected

2026-10-06

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Recorded AI-assisted source inspection; not independent human approval or hardware testing.

This profile covers the Key-A 20-pin reference design for one USB Type-C front-panel port. It does not certify a motherboard, cable assembly, USB mode, charging capability or fabricated part.

Source inspection is separate from independent technical approval, rights clearance and hardware testing.