Vintage HP Hewlett Packard M-S34 Wired Track Ball Computer Mouse Replacement. This is a pre-owned mouse in good condition. It does show some minor wear from use over the years. It also has a long cord, measuring 72 inches in length. There is a small gouge in the cord ( see the last photo ) that does not go through the wire covering. See the photos for the most accurate description of the mouse being sold.