I bought this mini keyboard for my HTPC as a wired keyboard & mouse combo was not only restrictive but also unsightly.
My main issue is that the keyboard is in US layout, so you need to change your keyboard layout in Windows and accept the fact that you loose the pound symbol.
Minor gripes are that I've had to reset the RF frequency a couple of times, it would nice to just to have to do this once but I have a couple of wireless items in the house which may be the cause and I don't know what my neighbour has. The variable DPI of the mouse is just a gimic - there are 2 settings, usefull or useless. The scroll wheel function is also pretty ropey, lacking any real control, and I seriously would have doubts about using the unit as a game controller. The user guide is very basic and could really do with some more detailed information on how to get the best of the devices functionality, there is no support on the manufacturers website, in fact this model isn't even listed.
So why the 4 stars?
Build quality seems excellent, the mouse and keyboard aspects both function well, and its suprisingly usable as a keyboard given it's size (I'm writing this using it). The built in function keys are really usefull allowing full control of media player,and the backlight is great if you've got the lights out. The unit does exactly what I need it to do (apart from the pound symbol - but how often do you need that?) and is totally inconspicuous when not in use. I don't have anything to compare this mini keyboard with but in all honisty it's quite impressive even with it's faults, I'm pretty pleased with my purchase all things considered.