zerkar 16-Port Gigabit Ethernet Unmanaged Switch, Desktop (GS316) AAA

Do i have to have 1gig internet speed to have this or no?

how to get plug and play to work? 14 ports not putting out IP, have modem and wifi router connected, but cant get other ports to work

Is the power adapter input voltage 100 to 220 volts? i need something that will also work outside the us. thanks

So this would give you 15 ports to connect into (1 in, 15 out), right?