The Kensington Expert Mouse Pro Trackball Model # 64213 is a wired trackball mouse that can be connected to a computer via USB or via PS/2 with included adapter. It has 6 programable buttons on the top and the other 4 buttons are also programable. The unit is compatible with both PC and Mac computers. The product is new and comes in silver color with a bright shiny blue trackball that is removable and cleanable.
Personal Note: If you are experiencing any wrist issues and you are using a standard mouse, then you need a Kensington trackball to save your wrist from having Carpal Tunnel issues and then requiring an ugly surgery. I have personally used Kensington Trackballs for over 20 years, and I have never had wrist issues and many of my co-workers have required surgery.Includes:- Kensington Expert Mouse Trackball (USB)- USB -to- PS2 adapter- Mouseworks Quickstart guide- Mouseworks Read First guide- Mouseworks software on CDSeller Note: I always ship my sale items the day after payment is received.