I have a Rosewill TU-155 case. There are ports on the front panel. All cables are labels accept for one. it is a connector that has two wires,one blue and one white. it looks like 4 should be going through the connector but only two wires go to it. There is also another blue and white cord but that one is labeled. I have no idea where to connect it. The instructions are limited. I think its a reset or type of power connector at first but those connectors are labeled. HELP!