? Only for Windows 7 / 8 / 10 ? Our USB to HDMI Adapter turns an available USB 3.0 port into an HDMI/VGA output with high resolution 1920*1080 support ? If your computer/laptop have USB 2.0 port only, DON'T BUY this adapter. It does also works USB 2.0 port, but for USB 2.0 port the max resolution support 800*600 only. Features: ? Add a secondary HDMI and extend your desktop without taking apart your computer to install a new video card ? Add multi-monitor capability to a single computer, be able to create engaging multimedia presentations. ? Great for researchers or writers, offering the ability to have reference material on one display and a working document copy on the other. ? Compact, lightweight gadget for home, school or company associates using laptop PCs, enabling connection to a secondary display / projector. Both HDMI and VGA output supports VIDEO to monitor/HDTV. HDMI also supports AUDIO output, but VGA doesn't have that capability. How to Install? 1. Please plug this usb3.0 vga hdmi adapter to your computer/laptop directly. 2. While plug this adapter into your computer, you'll see there is a new USB device folder in your computer, then double clicks to install the driver. Note: if the driver does not showed, please close your Firewall Settings. How to solve if it didnt work? 1. Confirm the system of your computer/laptop is Windows7/8/10,it does not work for other systems. 2. Check your usb port if it is loose or not,and change another port to try. 3. To manual download the newest driver from the website in the user manual, then install the driver and RESTART your computer.(Please remove the adapter while you restart computer.) 4. Please ask for help if you tried all the above still can’t get it work,