How to Pair logitech Mouse/Keyboard with Other non-Unifying Receiver (for PC) - YouTube
How to Pair Logitech Mouse /Keyboard with Unifying Receiver - YouTube
Pairing two Logitech Devices with the same USB Receiver (Windows 10) - YouTube
Logitech Unifying receiver - Wikipedia
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
Logitech K270 Wireless Keyboard with Unifying Receiver