USB Unifying Receiver for Logitech Mouse and Keyboard » eSquareParts
Logitech K400 Plus Wireless Touch Keyboard | Dell USA
Logitech WIRELESS TOUCH KEYBOARD K400 PLUS HTPC keyboard for PC connected TVs - Walmart.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
Original Logitech Keyboard K400r K400plus Unifying Mirco Dongle Receiver USB | eBay
Wireless USB Receiver Dongle 6 Channels Adapter For Logitech Unifying Keyboard K400/Mouse MX M905 M510 Repair Replacement - AliExpress
Wireless Dongle Receiver Unifying USB Adapter For Logitech Mouse Keyboard Connect 6 Device For MX M905 M510 Keyboard K400 - AliExpress
NEW-Logitech C-U0007 Unifying NANO USB Receiver M215/505/705/905 K340/350 & More | eBay
Genuine Logitech Unifying Mirco Dongle Receiver USB For keyboard K400r K400plus | eBay