Pack of 3 Logitech Wireless Unifying USB Receiver Dongle for Keyboard & Mice | eBay
Logi Bolt USB Receiver for Multi-Computer / Device Use
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
Logitech keyboards and mice vulnerable to extensive cyber attacks | heise online
Why you should really, really update your Logitech wireless dongle - The Verge
Step-by-Step Guide: Adding a New Device to Logitech Unifying Receiver - YouTube