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
Nuevo Original receptor Logitech Unifying Mouse Inalámbrico USB Dongle | eBay
Amazon.com: Logitech USB Unifying Receiver - 2 Pack : Electronics
Take note if you are a using a Logitech Unifying USB dongle, they are wildly insecure - HardwareZone.com.sg
Original Logitech M235 Gameing Mouse Wireless Unifying Receiver for Lap Top PC Ergonomic Optical Mini Computer Mouse|Mice| - AliExpress
Fixed: Logitech Unifying Receiver Not Working/Detected on Windows 10 - CPUTemper
Logitech Unifying Receiver 1 to 6 Devices USB Dongle for Wireless Keyboard Mouse | Compra online en eBay