The Pro Fit Mobile Retractable Mouse from Kensington is a reliable wired mouse with a retractable USB cable that stores inside the mouse for easy transport. It offers contoured buttons and sculpted sides for comfortable use and is compatible with Mac and PC operating systems. Simply plug it into an available USB port on your computer and you're all set. This retractable mouse is plug and play, so just plug it into an available USB port on your computer and you're all set.