Having had a spate of nuisance issues with my RAT7 and older OS releases (No hover. Software won't install properly, etc), I expected the same with Sierra. Upon installing, I did indeed find that hover was gone and the software (1.1.69) was being useless. I uninstalled the software, and unlike in previous OS X's, the mouse now seems to behave perfectly. Hover works, the middle and side buttons are assignable as buttons 3,4 and 5, and in general the mouse now seems very well behaved without any software at all. Can anyone confirm, or is this just some quirk with my system? I really don't want to install the RAT 7 software again as it's quite horrible.