Excellent with one exception

With 5 buttons can be customized with the Logitech software.

The dual wheel function (or toothed freewheel) is functional. However it does not allow to use it as a middle button and it is not programmable. Then you must use one of the programmable buttons as middle button.

For information, the middle button is used to open links in a new tab on most internet nagivateurs or so to make copy / paste in Linux.