A:Answer This depends on what you're trying to do. For using OBS, you plug in an HDMI from the Console/pc you're recording, plug in an hdmi to the display you want to see everything on, and then plug the USB into the computer you're using for recording. The first time you plug it in, windows *should* detect the device and install drivers for it. If not, you should be able to find the drivers on their website. Once the drivers are installed, you go into the sources part of OBS, add a new source, and select the device as the source. Make sure the selector on the device itself is set to the PC option (looks like a laptop, on mine, it's all the way to the left). Then you click on start recording/streaming in OBS.
For the alternate method, you still plug in all the things I mentioned, but you move the selector to the middle option on the device and it will record to the sd card in the slot provided you've placed on in there, but it will still output to whatever display is currently hooked in to it.