Logitech LX7 7-Button Cordless Optical Scroll Mouse Logitech LX7 7-Button Cordless Optical Scroll Mouse General Features: Dark blue and black mouse 7-button Wireless connectivity Optical technology Scroll wheel with Tilt wheel feature Programmable buttons 1200 dpi resolution USB/PS2 connector PC and Mac compatible Mini USB receiver with extension dock Regulatory Approvals: FCC CE