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I have a USB A-B type cable, where there are 4 color wires:

BLACK: Connect to GROUND/GND

Please help me for rest 3 colors: RED, ORANGE and BROWN

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You don't decide what the function of the wire is from the colour. Check out the pin-outs for connectors. But red is most commonly +5 VDC. Check this out: pinouts.ru/Slots/USB_pinout.shtml –  Ashtray Sep 20 '13 at 6:53

1 Answer 1

Their is no standard on the colour the cables inside a USB cable are the only way to know what each does is to trace it from the connector where the standards apply

Diagram for Type A & B

Type A USB


Tracing the cable from the connectors will be the only guaranteed way of knowing which cable is which

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