That is vga out. The board has two 4 pin connectors. I can post pics later. I have windows 10 is the "tool" I linked to going to work ok for me if I have the correct 4 pins on the board.
I have a DS-7208HQI-K2 that had a failed update. The monitor received a signal but stays black and nothing else shows up. Nothing on the SADP tool. Will this work to connect to the serial port. LC234X. I'm new to this and have some reading to do.