USB to RJ50 Console Cable AP9827 Cable for APC Smart UPS 940 0127B 940 127C 940 0127E with Molded Strain Relief Boot|Computer Cables & Connectors| - AliExpress
Amazon.com: APC AP940-1525A UPS Communications Smart-UPS Signalling Serial RS-232 Cable DB9 to RJ45 (RJ50) - Same as AP940-1525C and AP940-0625A But a Longer Cable : Electronics