Apc smart ups 280 watts 450 va input 230v output 230v interface port db 9 rs 232 rack height 1u key features max configurable power 280 watts 450 va nominal output voltage 230v input frequency 5060 hz 3 hz auto sensing output connections 4 iec 320 c132 iec jumpers input connections iec 320 c14 racktower convertible protects the initial investment in the ups when migrating from tower to rack mount environment multiple mounting methods allows for standardizatio