The problem had been the first version, and in the refresh no improvement. Incomprehensible at this price. Logitech sets obviously not looking for durability. I have got broken already tens of Logitech keyboards and mice within the first 12 months. Bin computer, so they are much more stressed, but that is to be used but their purpose. Unfortunately, there is no alternative what ergonomics terms ... therefore, as long as they can I give up the ghost within the warranty period in order to live ... so far, almost all reliable draufgegangen within the warranty)
