The scroll ring is the high point of this trackball, since it is not a mouse, there is no scrolling wheel. The 4 triggering buttons are well placed and responsive, the whole housing is quite ergonomically designed for an extraordinarily comfortable fit - regardless if you have small hands and fingers, or large paws like me. This is a LARGE trackball, which is perfect for any operation requiring detailed operation (CAD, Painting, etc.) as well as general everyday usage. Download appropriate driver for Kensington Expert Mouse (K64325) for your operating system from our website.Almost a Logitech Marble Trackball.but Not Quite This can be easily fixed by using driver update tool or by updating drivers manually. This means, that appropriate driver for Kensington Expert Mouse (K64325) is not installed or corrupted. Windows cannot initialize the device driver for this hardware.This device is not working properly because Windows cannot load the drivers required for this device.Windows cannot load the device driver for this hardware.The drivers for this device are not installed.

Try upgrading the device drivers for this device. Windows has stopped this device because it has reported problems.If you receive one of the following errors with your Kensington Expert Mouse (K64325) in Windows 10, Windows 8 or Widnows 7: All drivers were scanned with antivirus program for your safety. Please, choose appropriate driver for your version and type of operating system. Here you can download drivers for Kensington Expert Mouse (K64325) for Windows 10, Windows 8/8.1, Windows 7, Windows Vista, Windows XP and others.

Kensington mouse driver k64325