USB A style connector pinouts | Pin 1 — Vbus (+5VDC). (Pin 2 — D- (Data Signal, Negative Side) Pin 3 — D+ (Data Signal, Positive Side) Pin 4 — Shell (Shield/Drain Wire) Shell |
USB B style connector pinouts | Pin 1 — Vbus (Not Connected) Pin 2 — D- (Data Signal, Negative Side) Pin 3 — D+ (Data Signal, Positive Side) Pin 4 — Shell (Shield/Drain Wire) Shell |