Allows you to connect your computer to any monitor and projector with VGA input for the best video and audio quality. Provides the best compartibility and seemless interoperability with analog projectors and monitors. Compatible with any computer and tablet equiped with Mini Display 1.1a port or Thunderbolt such as Apple, MacBook, MacBook Air, MacBook Pro, HP, Dell, Asus, Lenovo Microsoft surface. Allows to mirror your screen or extend your desktop. You can work directly on the external display or you can extend your desktop. If presenting information, you can monitor what the audience is seeing.