The operation is as I said very good and you need to install additional drivers to the Unify software.
The media keys at the top of all work with the Windows Media Player. The VLC player can thus not be controlled. But volume up, volume and mute go ever since herewith the sound card is controlled directly.
There is only one LED, which indicates whether the Caps Lock key has been pressed. There are also a number pad but no LED that indicates whether it is active. But do not bother me further because the always remains with me.
The quality of materials and workmanship are very high. The buttons are all slightly roughened and the frame on the upper side is provided with a discreet pattern. There is the keyboard also in other styles, depending on your taste.
The unit is very flat and very sturdy. No crack and creak.
Logitech has once again shown that it does not have to follow the trend of ever smaller keyboards with keys and has always flatter here for less than 30, - Euro a top wireless keyboard on offer. The processing is usual high quality and it has to be sacrificed in favor of small size on any button. The wireless technology however achieved in some cases, the limits of their reliability. However, other manufacturers rely on the same technique.
Anyone looking for a compact keyboard with no frills, should strike here.