Amazon.com: Logitech K400 Plus Wireless Touch With Easy Media Control and Built-in Touchpad, HTPC Keyboard for PC-connected TV, Windows, Android, Chrome OS, Laptop, Tablet - Black : Electronics
User manual Logitech K400 (English - 2 pages)
Logitech K400 Plus Wireless Touch Keyboards
Logitech® K400 Plus USB Wireless Touch Keyboard; Black | Quill.com
Amazon.com: Logitech K400 Plus Wireless Touch With Easy Media Control and Built-in Touchpad, HTPC Keyboard for PC-connected TV, Windows, Android, Chrome OS, Laptop, Tablet - Black : Electronics