Logitech K400 Plus Touchpad Keyboard for TV connected PC
User manual Logitech K400 (English - 2 pages)
Logitech K400 Plus Wireless Touch Keyboard | Dell USA
Logitech K400 Plus Wireless Touch TV Keyboard with Easy Media Control and Built-in Touchpad, HTPC Keyboard for PC-Connected TV, Windows, Android, Chrome OS, Laptop, Tablet - Black - | IT Care
Logitech K400 Plus Keyboard Not Working Troubleshooting Guide - YouTube