TrackballWorks software lets you customise the 2 buttons Optical tracking technology precisely tracks movements Connection: USB Ambidextrous design 180 cm USB cable for reliable use without batteries Compatibility: Chrome OS 44 or later, Vista, macOS 10.10 or later, macOS 10.13 or later, macOS 10.8, macOS 10.9, macOS X 10.11, Windows 10, Windows 7, Windows 8, XP