How to connect or add a new keyboard or mouse to Logitech Unifying receiver - YouTube
Logitech USB Unifying Receiver 910-005235 - Best Buy
Logitech Unifying Receiver for Connecting Multiple Devices
Logitech USB Dongle Extender - Works with Unifying Receiver
Amazon.com: Logitech USB Unifying Receiver - 2 Pack : Electronics
Office Depot
Logitech Compact Wireless Mouse, 2.4 GHz with USB Unifying Receiver, 1000 DPI Optical Tracking, 18-Month Life Battery, PC / Mac / Laptop / Chromebook, Blue - Yahoo Shopping
Amazon.com: Logitech USB Unifying Receiver - Black : Electronics