Regardless, from reading the camera's specifications, the USB interface on the camera is for transferring files to/from the camera as a block mass storage device (like a USB thumbdrive) and does not function as a USB video source. To use this camera with OBS, you will need to use the HDMI output from it into a video capture device, such as the Elgato Camlink (or the composite video output, at lower image quality). Even then, it may not provide 'clean' video output, and instead show informational UI on the video (date/time, recording status, zoom level, etc).