APC Back-UPS CS, 300 Watts / 500 VA,Input 120V / Output 120V, Interface Port DB-9 RS-232, USB. Includes: CD with software, Cord management straps, USB cable, User Manual. Specification: Power Output power 300 W Surge energy rating 480 J Output power capacity 0.5 kVA Input frequency 50/60 Hz Ports & interfaces Cable length 70.9" (1.8 m) Performance LED indicators Yes Audible alarm(s) Yes Features Output power 300 W Surge energy rating 480 J Audible alarm(s) Yes Output power capacity 0.5 kVA Input frequency 50/60 Hz Battery Battery recharge time 8 h Typical backup time at half load 13.9 min Typical backup time at full load 2.4 min Hot-swap battery Yes Design LED indicators Yes Product colour Black Safety UL,/FCC/CE/C-Tick Certification FCC Part 15 Class B/Industry Canada/UL 1778/cUL Cable length 70.9" (1.8 m) Operational conditions Operating temperature (T-T) 0 - 40 °C Storage temperature (T-T) -15 - 45 °C Operating relative humidity (H-H) 5 - 95% Storage relative humidity (H-H) 5 - 95% Operating altitude 0 - 118110.2" (0 - 3000 m) Packaging data Package dimensions (WxDxH) 6.89 x 14.1 x 10.4" (175 x 357 x 263 mm) Package weight 15.3 lbs (6.95 kg) Weight & dimensions Weight 13.8 lbs (6.27 kg) Package weight 15.3 lbs (6.95 kg) Logistics data Products per pallet 80 pc(s) Certificates Safety UL,/FCC/CE/C-Tick Certification FCC Part 15 Class B/Industry Canada/UL 1778/cUL Other features Output connections 6 x NEMA 5-15R Input connection type NEMA 5-15P Dimensions (WxDxH) 3.58 x 11.2 x 6.5" (91 x 284 x 165 mm) Package dimensions (WxDxH) 6.89 x 14.1 x 10.4" (175 x 357 x 263 mm) Operating temperature (T-T) 0 - 40 °F Nominal output voltage 120 V Nominal input voltage 120 V Weight (imperial) 13.80 lbs Non-operating relative humidity (non-condensing) 0 - 95%