The USB32HDDVII USB 3.0 to HDMI and DVI-I Dual Head Adapter turns an available USB 3.0 port into one DVI-I or VGA port (DVI to VGA adapter included) and one HDMI output, with support for high-definition 1080p and 1920x1200 video and 5.1 surround sound audio (from HDMI port only). The adapter delivers a convenient external video solution that makes it easy to add multi-monitor capability to a USB-enabled desktop or laptop computer (optimal performance from USB 3.0, backward compatible with USB 2.0).Leveraging the high-bandwidth (5 Gbps) SuperSpeed USB 3.0 interface, the USB video adapter functions as a convenient external graphics card that eliminates having to open the computer case for video card installation. The adapter delivers smooth, high-definition content to multiple displays and can be used to mirror your primary desktop, showing the same image on each display, or to extend your desktop onto a second or third monitor to double or triple your workspace and increase your productivity.