USB 3.1 Legacy Cable and Connector Specification

Scope and location

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

Section 5.3.2.1, Figure 5-9 'USB 3.1 Standard-B Receptacle Interface Dimensions' (front view labels contacts 1-4 and 'POS 5'/'POS 9'); Section 5.3.2.2, Table 5-3 'USB 3.1 Standard-B Connector Pin Assignments' (note: Tx and Rx defined from the device perspective); Section 5.3.2.2, Table 5-3 'USB 3.1 Standard-B Connector Pin Assignments', printed p. 31; Section 5.3.3.1: 'The USB 3.1 Micro-B connector may be considered a combination of USB 2.0 Micro-B interface and the USB 3.1 SuperSpeed contacts' and accepts a USB 2.0 Micro-B plug; Section 5.3.3.2, Table 5-4 'USB 3.1 Micro-B Connector Pin Assignments', pins 1-5 and Shell (the USB 2.0 Micro-B portion); Section 5.3.3.2, Table 5-4 'USB 3.1 Micro-B Connector Pin Assignments', printed p. 39

Open the original source

Inspected

2026-10-20

Access

public page

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

Source scope and unresolved evidence are preserved in the engineering variant.

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