Logitech K400 Plus Wireless Touch Keyboard - YouTube
Logitech K400 Plus Touchpad Keyboard for TV connected PC
Wireless keyboard with Logitech Touch Mouse K400R - Skooter Blog
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 Touch Keyboard K400r
keyboard - How To Replace Logitech Wireless Unified USB Plug In Ubuntu - Ask Ubuntu
How to pair your Logitech Tablet Keyboard for Android - YouTube
Fix: Logitech K400 Plus Not Pairing to Bluetooth
User manual Logitech K400 (English - 2 pages)
Logitech Wireless Touch Keyboard K400 User Manual - Manuals+