The j5create JUH410 USB 3.0 VGA & 3-Port HUB as an external graphics card for your MAC or PC. It allows you to add an additional display and 3 USB 3.0 ports through your USB port. With j5create multi-adapters: there is no need to open up your computer to add an expensive graphics card: you simply load the drivers: plug in the adapter to the USB port: then plug in the VGA monitor cable into the adapter and you are ready. It supports three viewing modes: primary: extended: mirror modes. With "plug & play" functionality between your computer and 2nd monitor or projector: you will be able to create a new visual environment in seconds. j5create's elegant multi-adapter series provides you with a fast and portable alternative solution.