How to Pair Logitech M720 Mouse with Unifying Receiver - YouTube
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
Amazon.com: Logitech M720 Triathlon Bluetooth Wireless Optical Mouse with Unifying Receiver (Renewed) : Electronics
Logitech M720 Triathlon Multi-Device Wireless Mouse, Bluetooth, USB Unifying Receiver, 1000 DPI, 8 Buttons, 2-Year Battery, Compatible with Laptop, PC, Mac, iPadOS - Black - Optical - Wireless - Bluetooth/Radio Frequency -