APC Back-UPS Pro BP500UC pinouts
APC UPSes with standard USB cable pinout 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
APC by Schneider Electric, formerly known as American Power Conversion Corporation, is a manufacturer of uninterruptible power supplies, electronics peripherals and data center products.
APC was founded in 1981. APC main focus is power protection devices. They introduced its first UPS in 1984.