70 AX1930 Service GuideMainboard LayoutThis section shows the major mainboard components.No. Label Description No. Label Description1 ATX_12V ATX 4-pin connector 13 F_PANEL Power button/LED cableconnector2 CPU Processor socket 14 CLR_CMOS Clear CMOS jumper3 SYS_FAN System fan connector 15 PCIE16X PCI Express 2.0 Gen 2 x16expansion slot4 CPU_FAN CPU cooling fan connector 16 ME_DISABLE ME disable jumper5 DIMM1-2 DDR3 240-pin slots 17 F_AUDIO Front panel audio jackheader6 GPIO1 General Purpose I/O Signal 1 18 BAT1 Battery7 GPIO2 General Purpose I/O Signal 2 19 PCIE1X_1 PCI Express 2.0 Gen 2 x1expansion slot8 ATX_POWERStandard 24-pin powerconnector20 AUD/JACK Line in/Line Out/MIC9 F_USB 3 Front panel USB header(card reader)21 USB USB 2.0 ports10 F_USB 2 Front panel USB header 22 USBLAN RJ45 + USB ports11 SATA5 Serial ATA connector 23 HDMI1/VGA VGA + HDMI ports12 SATA1-2 Serial ATA connectors 24 KB/MS PS/2 keyboard + PS/2mouse ports