1、Record audio and video from external devices through the HD multimediainterface, you can easily save and share files through the computer, and support real‑time RTMP video streaming. And compatible with popular streaming software and services, such as for OBS Studio/VLC/PotPlayer/Vmix, etc. 2、High‑definition acquisition, strong compatibility, smooth pictures without delay, no delay, no external power supply, small size, ultra‑thin and easy to carry. 3、There is no driver, just plug it in and use it. It is a real‑time stream with low latency and can be used for game recording and conference recording. You can share for YouTube/Facebook/ Twitter to let more gamers know you. It is compatible for Windows/Linux /OS X. 4、The capture card supports 4K 30P HD input/output. A fast, familiar and economical way to share content in conference rooms and online meetings. To connect to a presentation, you don't need any software, just connect your laptop or tablet to start sharing via HD multimedia interface. 5、Connect the HD input end of the capture card to the signal source, and the HD output end to the display port, high‑definition capture, video recording, video live broadcast, teaching recording, game live broadcast, video live broadcast, high‑definition video recording camera, etc. 1 x Video Capture Card 1 x Manual   Item Type: Video Capture Card(Support loop output/audio)Material: aluminum alloy+ABS Color: As Pictures Shown Weight: Approx. 90g/ 3.2ozModel: Z31Interface: 2 x HD Multimedia Interface, 1 x USBInput resolution: up to 4K / 30HzOutput resolution: 1080P MaximumThe product conforms to USB video UVC specificationSupport for Windows/Android/Linux/OS X and other operating systemsSupport most acquisition software, such as for VLC/OBS/AMCAP, etcSupport HD local loop out;Input terminal: HD input can support 4K 30Hz, 8/10/12 bit color deep input formatOutput terminal: USB 2.0/M support 1080P 60Hz, YUV, JPEG output modeSupport the use of AWG26 cable, input transmission distance up to 15 meters,(1080P and below resolution)High-definition collection, smooth picture without jam, no delay;No need for external power supply, small size, ultra-thin portableHow to use:Connect the signal source with the HD input interface of the acquisition card through the HD multimedia interface cableConnect the display port with the HD OUT output terminal of the acquisition card through the HD multimedia interface cableConnect the USB terminal of the computer with the USB terminal of the acquisition cardOperation steps of the acquisition card: open the software → add a new source → select the video capture device/audio input capture → set the screen size → select the studio mode (double window) and click to start recording