Connect the USB to HDMI adapter to the USB 3.0 interface of the computer and connect the HDMI interface of the adapter to the HDTV, monitor, or projector via an HDMI cable. Select \u201cDuplicate\u201d, \u201cExtend\u201d, or \u201cProjector only\u201d mode according to the requirement. Then the pictures will appear on the extended display device.