How to Pair Logitech Mouse or Keyboard to USB Receiver - YouTube
Logitech Unifying Receiver for Connecting Multiple Devices
Logitech Union Wireless Keyboard Mouse Set Receiver M280m330m220mk275mk546mx Master Mk295mk235mk275mk345mk240mk270mk315 Pc Parts - Keyboard Mouse Combos - AliExpress
Amazon.com: Logitech 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
Wireless 2.4G Receiver Computer Keyboard and Mouse Transmitter USB 6 Channel Receiver Dongle Mouse Adapter for Logitech - Walmart.com
How to pair more than one device with a Logitech receiver