Logitech Unifying Receiver for Connecting Multiple Devices
Logitech USB Unifying Receiver Dongle for Mouse & Keyboard 910-005235 (5 Pack) | eBay
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
Logitech K400 Plus Touchpad Keyboard for TV connected PC
SOLVED: USB for wireless Logitech keyboard lost. - Logitech Harmony Smart Keyboard - iFixit
Genuine Logitech Unifying Mirco Dongle Receiver USB For keyboard K400r K400plus | eBay
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
Wireless Dongle Receiver Unifying Usb Adapter For Logitech Mouse Keyboard Connect 6 Device For Mx M905 M950 M505 M510 M525 Etc - Mice & Keyboards Accessories - AliExpress
For Logitech K800,K750,K710,K700,K520,K400,360 Unifying USB Dongle/Receiver 713929760527 | eBay
Logitech K400 Plus did not come with a USB dongle? Wait!! It's hidden in the box!! | THINKBOX
6 Channel Wireless Dongle Usb Receiver Adapter For Logitech Unifying Mouse Mx M905 M510 Keyboard K400 Repair Accessories Parts - Instrument Parts & Accessories - AliExpress