To install a wireless mouse on Microsoft Windows, place the provided USB receiver in an empty USB port on your computer and then turn on the mouse. Your computer should automatically install any necessary software and connect with the mouse, according to About.com
To install a wireless mouse on an Apple computer, open System Preferences, select Mouse and then click on Setup Bluetooth Mouse.Turn on the mouse and make sure its indicator light is flashing; this shows the device is in discovery mode and has enough battery life.
When the device name appears in the Search preferences, select it and click on Continue. Your computer should automatically pair with the device.