Connecting Nintendo Switch to iMac/Laptop with Video Capture Cards (HDMI to USB converter)

I am playing NieR Automata on Switch now. Since the display is too small, I wonder if I can output the video on my iMac. It turns out an $18 video capture card can solve the problem.

1. Video capture card connecting Switch and iMac/laptops
2. Video recording or streaming software like OBS

1. Video Capture Card

Just connect your HDMI cable to the Switch Dock with this USB card, and plug it into your iMac.

2. OBS

Open the system Preference->Sound, and change your input device to a USB.

Then create video and audio channels in OBS, and capture devices are set to USB.