1.SDI to USB capture card , Professional SDI Video and Audio to USB Capture Device,Compatible with All system (No Driver Required), MAIN FEATURE: Converts SDI (video and audio) to USB 3.0 without compression. with loop output connector. 2. The SDI to USB video capture can capture both SDI-compatible video and audio, sending audio and video signals to computers and push tp online live broadcast platforms. Suitable for high definition acquisition, teaching recording, etc.