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 967555-0403 Silver & Black RF Cordless Desktop S 510 Media Remote - Newegg.com
Logitech | Computers, Laptops & Parts | Logitech S5 Wireless Keyboard Yrak73 With Receiver | Poshmark