So the M505 was shortlisted and I must say, I did not realize, to work on the notebook. The additional highlight for me as an old couch potato, that the mouse uncomplainingly accepted the fabric sofa as well as surface beside the thighs. It is even so a good work possible and sometimes just past surf at Amazon and then it stuck there, is the pleasant coffee pleasure. The mouse is comfortable also in terms of size, not too small for my big hands on, feel and quality are good.
The USB connector is very small and can get stuck on the notebook, you get stuck anywhere. The necessary drivers I downloaded from the Logitech site because he was not there. For me personally, in today's times no shortage and no need to write-down. If I am to believe the battery indicator, keep the supplied Duracell reportedly 450 days! I am completely satisfied.