Problem fitting new mobo to dm500

There are 3 replies in this Thread which was already clicked 1,038 times. The last Post () by ezferret.

    just got a new dm500 mobo and the serial port connector has 8 pins but my old mobo had 3 pins
    Tried as many different combinations as poss but dreamup doesnt see box
    (Box starts up OK with some chinese software on it)
    Anybody know how to connect the mobo to the serial port?
    BTW the new mobo also has a switch terminal on it, and the old one doesnt

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