Kensington 64475 Mouse-in-a-Box USB/ADB Mouse (PC/Mac) Simple one-button mouse has been ergonomically designed for both right- and left-handed users Optical technology for precise tracking and no required cleaning Connects via USB and ADB for compatibility with both new and old Macs Backed by a five-year manufacturer's warranty and free technical support Easy-to-use mouse makes the perfect complement to Macs