Amazon.com: Logitech Wireless Touch Keyboard K400 Plus Keyboard with 3.5-inch Multi-touch Touchpad, Quiet Keys, Wireless Keyboard up to 33 ft. Plug-and-Play (Renewed) : Electronics
User manual Logitech K400 Plus (English - 2 pages)
Amazon.com: Logitech Wireless Touch Keyboard K400 Plus Keyboard with 3.5-inch Multi-touch Touchpad, Quiet Keys, Wireless Keyboard up to 33 ft. Plug-and-Play (Renewed) : Electronics
Logitech K400 Plus Wireless Media Keyboard Unboxing - YouTube
LOGITECH K400 PLUS | 3D CAD Model Library | GrabCAD