Connect multiple Logitech wireless devices using same USB receiver
How to Pair logitech Mouse/Keyboard with Other non-Unifying Receiver (for PC) - YouTube
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
Pairing two Logitech Devices with the same USB Receiver (Windows 10) - YouTube