152-6-2 Pin headers(1) Line-Out, MIC Header (9-pin): AUDIOThis header connect to Front Panel Line-out, MIC connector with cable.(2) Serial Port COM2 (9-pin): COM2Note: Orient the read marking on theCOM2 ribbon cable to pin 1Serial Port COM2 HeaderCOM2Pin 1(3) USB Port Headers (9-pin) : USB2/USB3These headers are used for connecting the additional USB port plug. By attaching an optionUSB cable, your can be provided with two additional USB plugs affixed to the back panel.USB Port HeadersPin 1USB2VCC-DATAGND+DATAVCCOC- DATAGND+DATAPin 1USB3VCC- DATAGND+DATAVCCOC-DATAGND+DATA(4) Reset switch lead: RESETThis 2-pin connector connects to the case-mounted reset switch for rebooting your computerwithout having to turn off your power switch. This is a preferred method of rebooting inorder to prolong the lift of the system’s power supply. See the figure below.Line-Out, MIC HeadersPin 1AUD_MICAUD_FPOUT_LAUD_MIC_BIASAUD_FPOUT_RHP_ONAUD_GNDAUD_RET_LAUD_RET_RAUD_VCC2910