Very nice touch, multimedia shortcuts, the touchpad is fine.
For the configuration under Linux, the utility Solaar walking on top.
Only failure: no click-middle (wheel), even by clicking left and right simultaneously. Too bad because this is an additional button for the right click, it could have been used for middle-click, handy for open tabs for example.
Other than that, given the low price I return not of the quality of this keyboard!
(I use it every day to program, so I think its usefulness is not limited only to a sofa / multimedia use, even if it does obviously very good too!