Just get a mains network adapter, probably be a load less money than those!
Ive never been able to recomend those to people, Ive seen so many problems with them. It really comes down the electrics. I know off quite an old building where the broadand is 6Mb direct from the router yet they could only get 0.5 through the mains. There was so much iterferance and it took ages to establish a link.
