This traveling, retractable, optical USB/PS2 mouse provides a great solution for the mobile professional. Take it on the road, and use the optical precision on virtually any surface with your laptop! Using optical technology, the mouse will track every motion with digital accuracy. Features include: USB/PS2 interface Optical precision technology Retractable cord High resolution 800 dpi Compatible with IB PC and Windows 98/2000/NT/Me/XP, and Mac