I have Microsoft wireless keyboard 7000 and mouse 8000. The USB receiver only works with USB2. It is plug and play but i think you have to instal software for full functionality of all features.
I have not done anything special in settings to let it work
Kjell, you are lucky having a wife with some of the same interest. I'm on holiday in Croatia, reading this forum every day. Yesterday my wife said: aren't you to old for that?? . Tore
Wimp HiFi : For full lossless experience we use FLAC on everything apart from on iOS, where we use ALAC (Apple Lossless). It is all in 44.1 kHz / 16 bit, which is exactly same files as on CDs.