Interface   1x USB 2.0 Type B Port, 1x Serial RS-232 (DB-9) Port   Software APC PowerChute Smart-UPS Bundle   Output Power Capacity 1000VA / 670W  Ouput Power Voltage 230 vac Input Power Voltage 160 - 286 Vac  Surge Energy Rating 480 Joules  Surge Energy Filtering Full time multi-pole noise  Filtering 0.3% IEEE surge let-through : zero clamping Response time meets UL 1449  Back-Up Time Half Load 31.6 minutes (335 Watts) Back-Up Time Full Load 9.1 minutes (670 Watts)  Weight 28.18 kg From Factor Rackmount 2U Battery Type RBC23 Maintenance-free sealed Lead-Acid battery  Dimensions (432 x 89 x 457 mm) WHD   Form Factor Rackmount 2U  Warranty 2-year  Limited Warranty by Authorized Distributor