CyberPower Online S OLS1000ERT2UA Double Conversion Online UPS - 1 kVA/900 W - 2U Rack/Tower - 4 Hour Recharge - 4 Minute Stand-by - 230 V AC Input - 208 V AC, 220 V AC Output - 8 x IEC 60320 C13 Receptacle(s) - Single Phase - Serial Port - 8 x Battery/Surge Outlet