1pc New Usb Receiver Wireless Dongle Receiver Usb Adapter For Logitech Mk270/mk260/mk220/mk345/mk240/m275/m210/m212/m150 Mouse - Mice & Keyboards Accessories - AliExpress
Is there a difference between Logitech's 'USB Nano receiver' and their 'USB Unifying receiver' and are the two compatible? - Quora
Logitech Unifying Receiver for Connecting Multiple Devices