Adtran 1180043L2 325W AC Power Supply & Battery Charger Type: AC Adapter Specifications: Efficiency: 91% Protection Type: Fuse Input Voltage Type: AC Input Voltage: 110 V AC Output Voltage: -54 V DC @ 6 A Output Power: 325 W Dimension: 15.4 x 3.5 x 2.9 Weight: 5.5 lbs.