Logitech Cordless Desktop S510 Keyboard with Mouse & Receiver - tested, works | eBay
Logitech Cordless S510 Wireless Keyboard Mouse and Receiver for sale online | eBay
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