BRAND NEW WITH THE FULL HPE WARRANTY!!! The H3C RPS 800-A redundant power system is an external DC power supply unit that uses AC input and provides DC output for switch redundant backup power. This redundant power system (RPS) provides selective DC outputs. Depending on the connected DC output cable(s), the RPS can provide +12 V DC, -54 V DC, or +12 V DC and -54 V DC concurrently to the powered device. The RPS 800 supports cold backup of power supply, which means it only switches to the DC output state when it detects a power supply failure of the powered device. Output Power: 650WForm Factor: ExternalInput Voltage: 110V AC; 220V ACNumber of +12V Rails: 1Output Voltage: 12V DC @ 17.25A-54V DC @ 12ADimensions: 1.70" x 17.40" x 7.20"Weight (Approximate): 8.38 lbs.Package Content: H3C RPS 800 Redundant Power SupplyPower CordFront and Rear Mounting Brackets UPC : 00885631173992