I am thinking of adding a computer upstaires in our house, but the router is downstairs.

I was looking at Wifi, but I found this Powerline network system which seems cheaper and more stable.

Looks really good, no new wires, just plug one into a power plug near the router (correct?) and the other on plug in a socket near the computer.

Seems like a simple set up, and they say 500 Mbps which seems fast, good enough for gaming (right?)

Look like there is a lot to choose from, but some are HomePlug certified, and some are not.

What is this HomePlug certification, is it important?

Is HomePlug certified faster?

Anyone using Powerline, and how do they like it?