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
Logitech Unifying Receiver for Connecting Multiple Devices
Buy the Logitech Unifying USB Receiver ( 910-005934 ) online - PBTech.co.nz
Logitech MK520 Wireless Keyboard Mouse Combo with Unifying