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4 pin USB A plug connector layout
4 pin USB A plug connector
May be easily obtained in any computer shop. Compatible with Back-UPS LS (USB) BP500UC, BP700UC; Back-UPS Pro USB BP350UC, BP500UC, BP500CLR, BP700UC; Smart-UPS 3.6G(USB) SUA1000, SUA1500, SUA750XL, SUA1000XL; Smart-UPS 4.5G(USB) SMT750, SMT100, SMT1500, SMT2200, SMT3000; Smart-UPS 5G(USB) SMX750, SMX1000, SMX1500 and some others
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
4 GND usually BLACK, wire should be 20-28 AWG 4

USB D+ and D- are twisted in cable. Outer shell is made of copper braid and aluminum shield.

Colors do not mean anything in the wiring scheme. You can use any color wire to rig something. Just make sure the colors match from end to end. Using the de-facto color is for industry types only.

 

4 pin USB B male connector layout
4 pin USB B male connector
According to 2 reports in our database (1 positive and 0 negative) the APC UPSes with standard USB cable pinout should be correct.

Is this pinout
APC UPSes with standard USB cable visual pinout:click to enlarge
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