USB cable schematic pinout

4 pin USB A / USB B / mini-USB jack connector layout
4 pin USB A / USB B / mini-USB jack connector


4 pin USB A or USB B plug connector layout
4 pin USB A or USB B plug connector

Very simple. Maximum length of cable is about 5 m for AWG20 and 0.8 m for AWG28 cable.

Pin
one side
Signal Description Pin
other side
1 USB Vcc (Vbus) usually RED, wire should be 20-28 AWG 1
2 USB Data - usually WHITE, wire should be 28 AWG 2
3 USB Data + usually GREEN, wire should be 28 AWG 3
x USBOTGID shorted to GND for host mode, N/C for device mode  
4 GND usually BLACK, wire should be 20-28 AWG 4

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