Drivers, my favorite. I'll look into it.

I did a speedtest of WiFi v the ethernet on my laptop running Windows 8.1 and they both ended up about the same. :s

For curiosity I did another test too...

Ahh, my mistake.
http://i.imgur.com/WN0Okfb.png
Still looks good I think.

http://i.imgur.com/WXgCtdj.png
Doesn't seem to be a problem. :s

Came ready to go in standard commercial type plastic casing like you'd buy in a tech store. I can probably dig it up if you need more details about it. Bought online from China but as far as I know...

I have a desktop pc in room 1 which up until now has been connecting fine to the internet via WiFi from the router (DrayTek Vigor2710ne) in room 2.

I was getting acceptable speeds using WiFi but...