text: This mouse claims to have an internal receiver. It shows a USB port connector but then when it arrived it had a very small piece of paper with a couple of small words stating the USB receiver was built in but I have tried to use this mouse on numerous computers with no luck. What a joke. Of course because I thought the computer I was using was outdated I didn't try returning it before the 10 days they give to request a refund or any return so I'm out the money and have a useless pink car.