APC USB DATA CABLE FOR BACKUP UPS BE725BB MODEL - 80CM LENGTH | eBay
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Network UPS Tools - Cables
Apc Ups Usb Cable Ap9827,ups Communications Cable Simple Signalling Nas Cable - Usb To Rj45 Rj50 940-0127e - Pc Hardware Cables & Adapters - AliExpress
Network UPS Tools - APC's smart protocol
How to build an APC U.P.S. data cable. | Page 2 | Hardware Canucks