Logitech Unifying Receiver for Connecting Multiple Devices
Logitech Unifying Receiver Universal USB Dongle TESTED WORKS C-U0007 | eBay
Amazon.com: DC Adapter for Logitech Harmony 1100 L-L0001 815-000057 Universal Remote Power : Electronics
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