Universal Pairing USB Receiver for Dell WM527 WM514 KM714 KM717 WM326 WK636P Keyboard and Mouse Note: This universal pairing usb devices are not compatible with the Logitech Unifying Technology devices (Pic #4). The easiest way to check compatibility is to look at the logo (blue chain) on the USB receiver and compare that to the logo (blue chain) on the body of the keyboard or mouse. NO Plug and Play . Need to Download Dell Universal Pairing Software As for download the Dell Universal Pairing Software, if you do not know how to download it, please contact us for the instruction. You can connect up to 6 compatible devices to one USB receive