Toccara

I live in student halls and I connect to the x360key internet via a wall socket connection. I only have one socket and when I plug in the ethernet cable into my PS3 it won't connect, saying "the connection timed out". I have managed wifirobin the online details of my connection by putting in the MAC address of my PS3. If I bought an bladeless fan ethernet splitter could I put it into my wall socket and connect both my PC and my PS3 at the same time? I think that is the problem, any ideas?