Logitech Unifying Receiver for Connecting Multiple Devices
Zone Wireless Plus Unifying + Audio Receiver
Universal USB Receiver For Dell Wireless Keyboard Mouse KM636 KM714 KM717 WM326 - AliExpress
USB receiver for Dell Universal Pairing Wireless Keyboard Mouse KM714 KM717 | eBay
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 for Connecting Multiple Devices
Amazon.com: Universal USB Receiver Replacement for Dell Wireless Keyboard Mouse KM714 KM717 WK717 KM636 WM514 WM326 WM126 WM527 : Electronics