GitHub - sginne/fn_key_k400_for_logitech: FN key disabler for k400+ logitech keyboard
Promotech - Wireless plug-and-play keyboard with integrated touchpad for total control of your TV-connected PC from your couch. K400 is a quiet, easy-to-use keyboard with a built-in touchpad, plus all the hotkeys
Logitech K400 Plus USB keyboard -- Any way to set Function Keys to operate normally in MiSTer? : r/MiSTerProject
Replacement Keys & Parts for Logitech Wireless Touch Keyboard (K400r) | eBay
Frequently Asked Questions
Logitech K400 Plus Touchpad Keyboard for TV connected PC