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 K400r - Adamsdesk KB
Logitech K400r Wireless Keyboard Touchpad w Unifying Receiver | eBay
Logitech WIRELESS TOUCH KEYBOARD K400 PLUS HTPC keyboard for PC connected TVs - Walmart.com
Logitech Wireless Touch Keyboard K400 with Built-In Multi-Touch Touchpad, Black - Walmart.com
Short review: Logitech K400r vs Plexgear Mediatrack Ergo - Erik Moberg's personal homepage - photography, gadgets, DIY, and more
Original Logitech Keyboard K400r K400plus Unifying Mirco Dongle Receiver USB | eBay
Genuine Logitech Unifying Mirco Dongle Receiver USB For keyboard K400r K400plus | eBay
Logitech K400R Wireless QWERTY Standard Portable Touch Keyboard with Receiver | eBay