How to Pair Mouse & Keyboard with Logitech Unifying Receiver
Logitech Unifying USB Receiver, Wireless 2.4 GHz Connection, Compatible with Logitech Unifying Mouse and Keyboards, Connects up to 6 Devices Simultaneously, PC/Mac - Black : Amazon.de: Computer & Accessories
Logitech Unifying receiver - Wikipedia
USB Unifying Receiver by Logitech® LOG910005235 | OnTimeSupplies.com
How to connect or add a new keyboard or mouse to Logitech Unifying receiver - YouTube
Logitech Unifying Receiver for Connecting Multiple Devices
How to Connect a Logitech Wireless Mouse to a Unifying Receiver