Dual HDMI external input capture device with USB 3.1 connection. The capture card has a 4K HDMI loop-out that can transmit the 4K HDMI video to an additional 4K display. It allows users to output two screens simultaneously for monitoring and live streaming. Inputs: 4K HDMI, HDMI in, Mic/Line audio in Outputs: 4K HDMI loop-out, USB 3.1 Gen 1(USB3.0) out, audio out Automatic input signal detection, up to 4K@60Hz Capture two HDMI videos and audio simultaneously Uncompressed video & audio capture, comply with UVC and UAC Plug-and-Play, driver free & power free Compatible with Windows, Linux, macOS Compatible with OBS, ZOOM, Teams, Twitch, Vmix, etc