I think you will find that from a hardware point of view the IO Board is fine, the problem is that the version of firmware you are running does not support them.
Rich
Really? S7 Batch 1 firmware, haven't upgraded?
The firmware updates released after the miner was out actually disabled the extra connectors on the board. The original firmware it shipped with allowed them to work but ironically that original firmware has a different issue that causes it not to work anymore without going in through SSH to disable a network check "feature".