Cisco power supply hot plug redundant 770 watt specifications general device type power supply hot plug redundant plug in module power device input voltage ac 100 240 v input voltage range ac 90 264 v frequency required 47 63 hz power capacity 770 watt compatibility information designed for cisco ucs c220 m4 entry plus smart play 770 watt c220 m4 entry smart play 770 watt c220 m4 high density rack server large form factor disk drive model 770 watt c220 m4 high den