This Dell PowerConnect 2016 10/100 Ethernet network switch has 16 ports and the input rating is 100-240 volts, 50-60Hz, .4Amps. It's a great switch, used by us for nearly 5 years for our church's network. We're only selling this item because we had to get a switch with more ports as our needs grew. It's rack-mountable and comes with the mounting brackets. We're not huge fans of Dell, but this is one item they did well. Simply connect your cables, fire this up, and you're ready to go.