Review on 🔌 USB to HDMI Adapter - Stream Smooth 1080P Video & Audio, Connect Multiple Screens | Windows 7 8 10 Compatible by Doug Hammett

This item only duplicates the display. You cannot expand the display. The description says it's compatible with Windows 10, the box says it's not compatible with Windows 10. There is no way to contact the seller for customer support. Other USB to HDMI connections worked on this device. Also, when the screen is duplicated, you can see the difference in quality compared to another brand's USB to HDMI adapter.