Targus PAUM003UX 3-Button USB/PS/2 Mini Optical Scroll Mouse (Black/Clear) Targus PAUM003UX USB/PS/2 3-Button Optical Scroll Mini Mouse General Features: Black and Clear profile 3-buttons Optical Technology Scroll Wheel acts as third button USB or PS/2 interface Compact design Unit Dimensions: 1.25 x 2 x 3.25 (H x W x D, approximate) 32-inch (approximate) Cable Length Regulatory Approvals: FCC CE