Logitech K400r Wireless Keyboard With Touchpad & Unifying USB Receiver - Tested | eBay
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 - Newegg.com
Amazon.com: New Logitech Unifying USB Receiver for keyboard K230 K250 K270 K320 K340 K350 K750 K800 : Electronics
Amazon.com: Logitech 920003051 K270 Wireless Keyboard, USB Unifying Receiver, Black : Electronics
Logitech Wireless Touch Keyboard K400 Plus review: Logitech's $40 K400 Plus spruces up the couch-potato experience - CNET
Logitech K400 Plus Touchpad Keyboard for TV connected PC
Amazon.com: Logitech USB 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