After downloading the software, everything is pretty intuitive and quickly took over.
There is a downside: the typing comfort because the keys are slightly backward, it's just a little help to take.
For the rest, many advantages:
_repose removable wrist
_rétroéclairages adjustable in three colors to know which mode you are (as the G keys are programmable macros in 3 models, the color reminds on which mode you are in)
super fast _paramétrage macro keys (MR key)
_écran LCD that gives information by game by downloading software
_taille reasonable despite the increasingly touches and nice design
_the corresponding button is nice and not noisy
As against something that does not seem necessarily very useful: the wheel to the right to sound ... The question is whether it can be set.