Logitech Unifying USB Receiver for Wireless Mouse and Keyboard, 6-Device (910-005235) | Staples
How to pair more than one device with a Logitech receiver
Logitech latest Version Genuine Tiny Unifying General Receiver Dongle Connect up to Six Devices for Logitech mouse mice keyboard|unifying receiver dongle|logitech donglemouse dongle - AliExpress