1. 3 IN 1 CAPTURE CARD convert AHD/TVI/CVI video signal into USB signal, 2. capture AV signal and recording via computer, laptop or cell phone, 3. support microphone audio input also. 4. is widely used in CCTV, machine video capture, video meeting, education, fishing camera. 5. compatible OBS, PotPlayer, AMCAP, VLC software. How to use: 1.Connect input video to "3 in 1 input" port, connect video output to "looping out" port if you need. 2.Connect to PC by USB output port, or connect to a OTG connector to cell phone. 3.If there has a audio input, connect to "mic in" port. 4.When you using a software to capture video on PC, choose Cap Video" and activate it. It is successful once the red LED blinking. Sweet tips: The device may hot when using, it is because the compact design. It is normal. This is a 3 in 1 capture card which support AHD/TVI/CVI signal input, and USB output to computer. It capture video and audio both, it is a high cost effective AV capture card which support UVC/ STANDARD. The output port is USB 3.0. It compatible , Linux and also Android system. It is a plug and play tools for HD AV capture. The product has color difference, which does not affect the use Colour:Photo Color Material:Aluminum alloy Package Contents: 1 x Video Capture Card 1 x USB cable(colors and styles are random, don't accept the specified color) 1 x BNC to male connector 1 x BNC to female connector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.