Do you have a question about the DIGITNOW! U602 and is the answer not in the manual?
Connect to computer with USB3.0 cable.
Connect earphones for 3.5mm audio output.
Connect microphone for voice comments during gameplay.
Connect HDMI display devices for output.
Connect HDMI signal source devices for input.
Steps for connecting device and configuring OBS Studio for capture.
Instructions for using OBS Studio on macOS for capture.
Instructions for using QuickTime Player on macOS for capture.