These powerline internet devices have come a long way!  It worked without any complicated instructions or setup.  You just plug them into the wall, connect one to your router and the other to a device, and away you go.  I used a laptop for testing and did a bandwidth upload/download test and reached the maximums, so your internet speed is the limiting factor. I tested with the units on separate live conductor circuits from my 3-wire 120/240 volt house system, including an outlet that won't normally transmit old fashioned x10 home automation command signals across that divide.  No problems.  I'd agree with other reviewers that you are probably better off with the 3 port unit, though.