How to Connect Logitech Wireless Mouse to Unifying Receiver
Logitech USB Unifying Receiver, 2.4 GHz Wireless Technology, USB Plug Compatible with all Logitech Unifying Devices like Wireless Mouse and Keyboard, PC / Mac / Laptop - Black : Amazon.co.uk: Computers & Accessories
Logitech Unifying Vs Non-Unifying Receiver (software in description) - YouTube
Best Buy: Logitech USB Unifying Receiver 910-005235
Logitech® USB Unifying Receiver, 2.4GHz Wireless Technology, Compatibl – AJMartPK
Logitech Unifying Receiver for Connecting Multiple Devices