Who's had luck with using one, and which model/brand did you use?

I have a Dell with embedded scroll wheel. 2006ish manufacture, I think? The only thing I can get it to do is enter backspace characters. Tried it to set the Network Configuration but had to go back to using the remote. Didn't matter if I tried front or rear USB ports, left it plugged in while starting the Central...or plugged it in afterwards.