Connecting a Logitech device to your Unifying Receiver (Windows and Mac) - YouTube
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
Solaar' Lets You Manage Logitech's Unifying Receiver on Linux - OMG! Ubuntu