This keyboard mouse combo has been tested and is working. There is a bite mark on the left side of the keyboard near the escape key as shown in the photos. Batteries not included. The Microsoft Wireless 900 Desktop Wireless Keyboard & Mouse with USB receiver is a standard desktop set that offers wireless connectivity for convenience. With a QWERTY layout for the keyboard and a wireless mouse, users can easily type and navigate without the hassle of cords. The Microsoft brand ensures quality and reliability, making this set a practical choice for those looking for a sleek and efficient keyboard and mouse combo.
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