Maruson PRO-1000ALCD 1000VA/600W USB LCD UPS System LCD Display for More Reliable Power Status Feed Back; Advance Battery Management,Increases Longevity, Performance and Reliability; AVR (Automatic Voltage Regulation Provides Stable Power) Convenient DC Cold Start Function; USB Communication Interface; Power Management Software; Fax/ Modem/Phone and Network Surge Protection (RJ11/RJ45); Battery: Battery Type: 2x 12V/7Ah; Back Up Time: 60 minutes Capacity: 1000VA / 600W; Input: Voltage: 110~120 VAC, Voltage Range: 89~140 VAC, Frequency: 50/60 Hz; Output: Nominal Voltage: 110/120 VAC  10%, Frequency Regulation: 50/60Hz 1Hz; Waveform: Modified sinewave Recharge Time: 10 hours to 90% after complete discharge; Transfer Time: 2~6 ms (Typical); Protection: AC Surge Protection: Full Time, 860 joules, Phone/Fax/DSL/Network Surge Protection: RJ11/45; EMI/RFI Filter: Full Time; AC Input: Circuit breaker Full Protection: Overcharge and Overload Protection; Outlet: 6x Battery Power Supplied Outlets; Noise Level: AC Mode - Less than 40dB; Backup Mode - Less than 45dB; Interface: USB (Windows Family, Mac, Linux Family,and Unix Based Famillies)