CyberPower's OfficePower 1100AVR Battery Back-up System not only guards against surges and spikes, but will also step up low voltages or step down high voltage conditions to safe output levels without resorting to battery power. OfficePower 1100AVR also protects your computer system and valuable data during a power outage. 1100VA/660W Battery run-times from 40-82 minutes, 1500 Joules USB and Serial Interface Compatibility, Internet-ready 1-in/2-out, phone/fax/modem surge protection, 6 full time surge, 3 battery backup.