I had to install driver for K400R wireless keyboard/Mousepad. With Windows 11 - Peripherals - Linus Tech Tips
Multifuncional teclado para xbox one/ps3/apple tv pc portátil para mac para logitech k400plus/armonía k400r|keyboard for xbox one|keyboard keyboardkeyboard for apple - AliExpress
Original Wirless 2.4G Logitech K400R K400 upgrade multimedia wireless keyboard With 3.5inch Toupad Muti-media Keyboard - AliExpress Ordenadores y oficina
Teclado bluetooth Logitech K400r: análisis en español - YouTube
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
Logitech Wireless Touch Keyboard K400 driver and software
ᐉ Logitech K400r Driver and Software Download For Windows & Mac