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 that comes with the purchase, and the mouse is recognized and ready to use when the receiver is attached to the main unit. However, when connecting to a Unifying receiver other than the one purchased, pairing with the Unifying receiver is not yet complete, and connection settings with the Unifying receiver are required.