Belkin Miniscroller Optical Mouse with Programmable Button This affordable compact mouse makes an ideal travel companion for your laptop. Advanced optical technology improves tracking operation versus conventional, rubber-ball mechanisms. Easily programmable—enables one-click selection of your favorite sites, applications or most frequently used commands. Embedded optical sensor has no mechanical parts to clean and adapts to virtually any surface. Offers a long-term solution for the mobile professional. Mouse Technology: Optical; Connector/Port: PS/2; Left/Right Hand Use: NA; Buttons: 3.