Logitech Unifying Receiver for Connecting Multiple Devices
Logitech Unifying receiver - Wikipedia
3 Ways to Connect a Logitech Wireless Mouse on PC or Mac - wikiHow
How to pair more than one device with a Logitech receiver
Amazon.com: 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 : Electronics
How to pair more than one device with a Logitech receiver
Logitech MK520 Wireless Keyboard Mouse Combo with Unifying
How to Pair Logitech Mouse or Keyboard to USB Receiver - YouTube