I bought this mouse for my new Dell Inspirion 9200. I loved the small size and got used to it quikly. It conencted just fine and worked great for the first few days. I made sure to charge it when the light told me to. But after the third day, I would use it and all os a sudden it would lose its connection. I would have to reconnect and then after a few minutes or half hour, it would die again. I thought it was the batteries, but it wasn't. I returned it and bought A logitech MX900. WORKS WONDERFULLY!