Apc smart ups 390 watts 620 va input 230v output 230v interface port db 9 rs 232 key features max configurable power 390 watts 620 va nominal output voltage 230v input frequency 5060 hz 3 hz auto sensing output connections 1 iec 320 c133 iec 320 c132 iec jumpers input connections iec 320 c14 features battery protected and surge only outlets reserves power capacity and run time for connected equipment that require ups battery back up while providing surge only