Read signal from USB mouse on an Arduino ? I've got a project where I'd need to read my mouse's signal. My mouse is a G700S (so USB) and the thing was I don't really know how to do and even if it's feasible.
I'm using an Arduino Micro and my initial idea was to get a PS/2 to USB Adapter (I already have one) and then to plug it to something like this wired to my Arduino. 
So my question basically is "will it work ? and if not, why ?"

The main idea is not to use USB (like an USB Host Shield) because Arduino doesn't have any USB mouse driver.

Thank you in advance
This would be possible only if the mouse actually supports PS/2. USB to PS/2 adapters are entirely passive, and in order to function it requires that the controller in the mouse is designed to communicate in both protocols. Modern mice, especially wireless ones don't tend to have this capability anymore as PS/2 is all but a dead standard.