FIELD GUIDESource-led reference

Source S664 · recorded inspection

USB Engineering Change Notice: MicroUSB Micro-B ID Pin Resistance and Tolerance stack-up between D+ and D-

USB Implementers Forum

Scope and location

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

p. 2 'Specification Changes': Rb_PLUG_ID minimum raised from 100 kOhm to 1 MOhm for the Micro-B plug ID pin

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.