A:
This question was posted on the Logitech M235 mouse product page - assuming you meant mouse in your question. Regardless, a person should look for the Logitech USB Unifying Receiver symbol (shown on the mini dongle to the right of the mouse in the main photo) on the Logitech keyboard or mouse. If the symbol matches (orange with a star-ish shape center), then the device uses Unifying tech. A replacement Logitech Unifying Receiver can be purchased through many vendors. There are instructions on Logitech's site on how to pair a device with a new mini dongle. If you already have another Logitech device that uses the same type receiver, it can also be paired with your device and supports up to 6 devices. Good luck!