Tripp Lite SmartPro UPS, Line Interactive, 1500VA, 120V, 2U Rack/TowerIdeal protection for all rackmount equipment. Advanced automatic voltage regulation corrects brownouts and overvoltages without using battery. USB & DB9 communication ports and included software for complete power management. Built-in LCD screen displays operating conditions. System VA: 1,500 VA; Backup Time at Half Load: 19 minutes @ 500 Watts; Automatic Voltage Regulation (AVR): Yes; Battery Recharge Time: 5 h.