System Board1-71.4.3 Connector FunctionsTable 1-2 lists the different connectors on the system board and theirrespective functions.Table 1-2 Connector FunctionsConnector FunctionCN2 280-watt SPP control connectorCN3 Power core connectorCN4 PS/2 mouse (above) / keyboard (below) connectorsCN7 Power core connector (VCC3 & VCC)CN8 USB connectorCN9 CPU2 Fan ConnectorCN10 CPU2 Temperature connectorCN11 COM2 (lower left), COM1 (lower right), and Parallelport (above)CN12 LDD Fail LED signal connectorCN13 Housing fan 1CN14 RJ45 LAN socketCN15 Housing fan 2CN16 CPU1 Temperature connectorCN17 Narrow SCSI connectorCN18 Wide SCSI connectorCN19 FDD connectorCN20 CPU1 Fan connectorCN21 Secondary IDE connectorCN22 Primary IDE connectorCN23 Housing fan 3CN24 RDM PS Status connectorCN25 Housing fan 4CN26 Hardware Monitoring Reset switchCN27 Power LED connectorCN28 RAS Testing connectorCN29 HDD LED connector