Separate per-device settings

[Archie]

For systems with more than one pointing device connected (trackball + mouse, embedded touchpad + trackball, etc) it's inconvenient to adjust sensitivity in OS control panel, as it affects all the devices.

For Windows, there's very useful software: EitherMouse by Steffen Software:
http://www.eithermouse.com/

Leave multiple mice on a pc and automatically swap buttons on each mouse.
Have a left-handed and a right-handed mouse always connected and ready to use.
Match speeds across different mice, ie touchpad and mouse with different speeds.