Micro Innovations - Micro optical wireless 5 button Wireless Optical Scrolling mouse USB-PS/2 Mouse with charger and 3.5 floppy disk, you will most likely need this driver to get the mouse to operate even though it appears to work fine. Transmitter and receiver of mouse appear to operate fine but mouse wont move. Unplug the mouse from the USB port wait 5 sec. Plug the USB cable from the receiver back in and when it asks for the driver cmouhid.vxd just tell windows where to find this file. reboot system and after all start up files and programs have loaded the mouse should work fine.