Logitech Wireless Touch Keyboard K400 Plus (920-007119)
Logitech K400 Plus Touchpad Keyboard for TV connected PC
Logitech Wireless Touch Keyboard K400 Plus | ConferencingWorks.com
Amazon.com: Logitech Unifying Receiver, 2.4 GHz Wireless Technology, USB Plug Compatible with all Logitech Unifying Devices like Wireless Mouse and Keyboard, PC / Mac / Laptop - Black : Electronics
Logitech Unifying receiver - Wikipedia
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 Keyboards - Newegg.com