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

Scope and location

Defines 20-pin and 40-pin front-panel internal headers; the 20-pin Key-A supports one USB Type-C port or one Standard-A port. V43 uses mechanical/interface identity only.

Section 2 / page 6, 20-pin Key-A header

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Inspected

2026-10-06

Access

public pdf text

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

Identification/reference scope only. V43 does not convert this source into a universal pinout, fabrication drawing, electrical approval, protocol guarantee or end-to-end compatibility verdict.

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