Confirmed working. Are you missing your receiver? To use it, you need to pair it with your Logitech product (mouse, keyboard, etc.). Logitech wireless mice are paired with the Unifying receiver included at the time of purchase, and the mouse is recognized and ready to use when the receiver is connected to the main unit. However, when connecting to a Unifying receiver other than the one purchased, pairing with the Unifying receiver has not been completed, and connection settings with the Unifying receiver are required.