This is the current ROM board for the Data Hiway Port II.

This card must be used with COMM board 30752787-003.

Note: Versions of this board below issue 18 have a flaw in their address decode circuitry, resulting (with very low probability) in the box going into reset if it occurs during the diagnostic, or a wrong answer if it occurs during a PID calculation. The next scan corrects the answer. If an affected box has not gone into reset, it probably does not have the problem and should be useable.