NOTE: You can connect your device with a Unifying receiver other than the one included with your product. You can determine if your Logitech devices are Unifying by this logo: 
If you have purchased a spare USB receiver or have a USB receiver a spare receiver, and want to connect a device to the receiver, here's how:
If you have purchased a spare USB receiver or have a USB receiver a spare receiver, and want to connect a device to the receiver, here's how:
- Plug the Unifying receiver into a USB port on your computer.
- Press the connect button on the bottom of the mouse.
- Run the Unifying software to pair your device to the receiver and follow the instructions on your screen. If you don’t have the Logitech Unifying software, you can download it.