Logitech MX Master Wireless Mouse, Bluetooth or 2.4 GHz with USB Unifying Mini-Receiver, 1000 DPI Any Surface Laser Tracking, 5-Buttons, Amazon version, PC / Mac / Laptop - Graphite Black : Amazon.co.uk:
Ask a Swiss: How to connect a non-Unifying Logitech keyboard & mouse to a new dongle
Logi Bolt USB Receiver for Multi-Computer / Device Use
Amazon.co.jp: [Unifying Receiver with] LOGICOOL Brand M720 Triathlon Mouse Bluetooth Multi Device Windows Mac OS Chrome Os Android Supported Flow Function : Computers