Amazon.com: Logitech C-U0007 Unifying Receiver for Mouse and Keyboard Works with Any Logitech Product That Display The Unifying Logo (Orange Star, Connects up to 6 Devices) (C-U0007) : Electronics
How To Pair Logitech Unifying Receiver With Mouse And Keyboard | Logitech | Get Fixed - YouTube
Replacing Your Wireless Mouse / Keyboard Receiver - ComeauSoftware.com
Why you should really, really update your Logitech wireless dongle - The Verge
How to Pair Logitech M330 with Non-Unifying Receiver (for PC only) - YouTube