I read other people's negative reviews of this product but decided to take a risk rather than spend £50 on a more expensive model. I wanted to extend Logitech's new air mouse across CAT5E cable from my server (sits in my garage) to my lounge where I watch movies and naturally need to control the server. This is between 25-30 metres and it works absolutely perfectly. I actually tested it over double this distance (I sent the USB signal from a laptop in my lounge, down to my garage, through my patch panel, and back up to my lounge (a total distance of around 50m, maybe a little more) and the product still worked fine. Yes it is USB 1.1 but if that is what you want (fine for mice, keyboards, etc) then no problem at all. It wouldn't be suitable for connecting external drives.