The Targus USB Optical Mouse is a three-button mouse with an ergonomic design to provide comfort while in use. The integrated scroll wheel makes it easy to navigate through numerous pages at a quick pace. Featuring a USB-connection with PS/2 adapter for use with legacy PCs, this cost effective mouse is easy to use simply plug and play. No driver is required. The USB Optical Mouse is also ambidextrous to suit both left and right-handed users.