There’s probably more to review here than on any mouse I’ve ever used. Let’s start with the basics then: The mouse is made of an unusual combination of metal and plastic, with sturdy plastic keys and grips mounted on a machined aluminium chassis.
On the top of the mouse, we can see the two normal left and right mouse buttons, a metal scroll wheel and a slightly recessed button for changing between software profiles. As you change between the six profiles that can be stored in memory, a small light bank of the left hand side fills up accordingly.
The industrial look is quite an appealing one, with rather sharp lines all around.
The right hand side of the mouse has a blank flank, with no macro buttons in sight.
The left hand side of the mouse is dominated by a cluster of macro buttons, looking somewhat like sections of bark coming out of a Ponderosa Pine tree. There are nine macro keys here, all designed to be operated by your thumb. As well as the nine macro keys, there are also two smaller keys for increasing or decreasing the mouse’s sensitivity.
Speaking of the mouse’s sensitivity, let’s have a look at the bottom of the mouse and at that rather impressive 5700 DPI sensor. We can also see the M90’s feet, which are reportedly PTFE Glide Pads. The flat aluminium surface gives the M90 a very rugged and sturdy look and feel here.