APC AP9827 USB to RJ45 cable accessory

Dedicated UPS Communication Cable

The APC AP9827 is a 6-foot cable that links compatible APC UPS units to desktops, workstations or servers via a USB-A 2.0 port on one end and an RJ45 connector on the other. It provides the dedicated signalling path required for power-management software to monitor battery status and trigger graceful shutdowns. Designed for front-panel access, it suits IT administrators who need reliable local UPS connectivity without network-based management cards.

Simple Signalling Over Standard Connectors

The cable uses a straightforward 4-pin USB Type-A to RJ45 wiring scheme that carries simple signalling rather than a full serial or USB data stream. At 1.83 metres long, it reaches from a rack-mounted or floor-standing UPS to a nearby USB port without excess slack. Weighing 1.00 lb, the moulded connectors and strain relief are built for permanent installation in server rooms or office environments where accidental disconnection must be avoided.

Limited to APC Simple Signalling Protocol

Because the cable implements APC's proprietary simple signalling protocol, it only works with UPS models that expose the matching RJ45 management port and do not require full USB HID or serial communication. It cannot be used with UPS units that demand a true USB data interface, nor with third-party power hardware lacking the specific RJ45 pin-out. Buyers needing network-based monitoring or compatibility with non-APC equipment will need a different connectivity solution.