Logitech USB Unifying Receiver Dongle for Mouse & Keyboard 910-005235 (2 Pack) - Walmart.com
Is there a difference between Logitech's 'USB Nano receiver' and their 'USB Unifying receiver' and are the two compatible? - Quora
Logitech Unifying receiver - Wikipedia
Marcus Mengs on Twitter: "Logitech Unifying receiver fake. Bought 3 cheap Unifying CU0008 receivers (TI chip). Turner out, they all are CU0007 (Nordic) with wrong label and ALL HAVE THE SAME S/N