Ultra 2000va psu was tested while linked to a computer and is in perfect working condition. Comes with power and phone cables in the original box. The Ultra 2000VA offers an impressive array of features and benefits including line interactive design, AVR (auto voltage regulations), USB communication port, alarms for battery backup, low battery and overload, energy saving function (UPS green mode), automatic charging when UPS is off and much more. This outstanding unit protects up to four devices simultaneously and is fully digitized microprocessor controlled. For the ultimate protection at a minimal cost - choose the Ultra 2000VA power protection unit. Warranty from Ultra with online registration. Sold As is. Specifications Power Protection Type: UPS Battery Backup Input Voltage: 110V-120V Input Connection Type: NEMA 5-15R Cord Length: 6 ft. Recommended Electrical Service: 120V Watts: 1200 Watt Voltage: On Battery 120V 5% Volt Amps: 2000 VA Output Frequency Regulation: 50/60Hz ±10% (auto sensing) Output Voltage Regulation: On-Battery Output Voltage Regulation Nominal ± 2% Battery Recharge Rate: 6 Hours to 90% Type: Sealed, Maintenance Free Lead Acid Surge Energy Capacity: 2100 Joules Short Circuit: Resettable circuit breaker UPS output cuts off immediately Overload: Line mode: 110% of nominal at 1 minutes, 130% after 3 seconds Connected Equipment Warranty: $125,000 Serial: USB Dimensions: 5.1" x 15.0" x 7.6" Weight: 14.5 lbs Outlets: 4 Nema 5-15R Outlets Data Line Protection: RJ11 Modem & RJ45 Network Operating Systems: LINUX Windows 2000 Windows 95 Windows 98 Microsoft® Windows® ME Windows NT Windows XP