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 : Amazon.co.uk: Computers & Accessories
Wireless Dongle Receiver Unifying USB Adapter for Logitech PC Mouse Keybo#$6 | eBay
Zone Wireless Plus Unifying + Audio Receiver
Logitech Unifying Receiver for Connecting Multiple Devices
Logitech Unifying Receiver
Brand new - Logitech Unifying Receiver for keyboard & mouse | eBay
Logitech USB Unifying Receiver | 2.4 GHz, 6 Wireless Devices
Logitech USB Unifying Receiver, 2.4 GHz Wireless Technology, USB Plug Compatible with all Logitech Unifying Devices like Wireless Mouse and Keyboard, ...
Logitech Unifying Receivers Vulnerable to Key Injection Attacks