Wireless Dongle Receiver Unifying Usb Adapter For Logitech Mouse Keyboard Connect 6 Device For Mx M905 M950 M505 M510 M525 Etc - Mice & Keyboards Accessories - AliExpress
FreeKB - Logitech Resolve "There is no Unifying receiver plugged into your computer"
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
How to Connect a Logitech Wireless Mouse to a Unifying Receiver
How to Connect a Logitech Wireless Mouse to a Unifying Receiver
Logitech Unifying Receiver for Connecting Multiple Devices