The USB2HDMI USB (Universal Serial Bus) HDMI External Video Adapter (Dual or Multi Monitor with Audio) turns an available USB (Universal Serial Bus) 2.0 port into an HDMI output, with high resolution video support (up to 1920x 1080) & audio. The USB (Universal Serial Bus) HDMI adapter can be used to mirror your primary desktop, showing the same image on each display, or to extend your desktop to double your workspace & increase your productivity. This external graphics card is a cost-saving multi-monitor or dual display solution, for either laptop or desktop applications, offering the ability to connect an additional HDMI (or DVI) display to your computer setup without the hassle of opening the computer case to install a new video card.