Kensington 72128 PilotMouse Optical Pro 5-button USB/PS2 Mouse for Right-Handed Users (PC/Mac) DiamondEye optical technology responds to your fastest movements with accurate tracking and precise guidance Features 5 programmable buttons and MouseWorks software that reduce repetitive tasks to a single click Connects via USB/PS2 and is guaranteed to work right out of the box on both PCs and Macs Backed by a five-year manufacturer's warranty and free technical support Unique, ergonomically-designed shape provides ultimate comfort for right-handed users