The j5create USB 2.0 Display Adapter acts as an external graphics card for your PC. It allows you to add an additional HDMI or monitor/display through your USB 2.0 port. No need to open up the computer to add an expensive graphics card: with the USB 2.0 Display Adapter you simply load the drivers: plug in the adapter to the USB port: then plug in the HDMI monitor cable into the adapter and you are ready. The j5create USB 2.0 Display Adapter supports three viewing modes. Primary mode: allows you to have individual applications open on each monitor: vastly improving productivity. Extended mode allows you to extend your desktop across multiple displays: great for spreadsheets. Mirroring mode is used to clone one screen onto another: ideal for presentations. With a Plug & Play functionality between your computer and 2nd monitor or projector: you will be able to create a new visual environment in seconds.