How to make function keys default Logitech k400r keyboard tutorial using Logitech setpoint software - YouTube
Logitech Keyboards Review: K310 and K400r
I'm sick of old stuff you can't but anymore on this sub! I bought this Logitech k400r about 10 years ago and no matter how much I abuse and/or neglect it, it
Wireless Dongle Receiver Unifying USB Adapter for logitech Mouse Keyboard Connect 6 Device for MX M905 M510 Keyboard K400 - AliExpress