31DB9 IR COMDB25ParallelAssembly : 010-0066-xxJ12J5J4B1J2J3PWR1J14J15J13SCSISocket 7Primary CPUCache SocketBATT_1KBDLOCK RESETSPEAKERP8 P9 P103v Power Conn.Standard Power ConnectorCLK1VREG1J8 3rd & 4th IDE HDD's or IDE CDROMJ91st & 2nd IDE HDD'sJ7FloppyJ6AMDLAN/SCSIChipBIOSBank 0aBank 0bBank 1aBank 1bBank 2a1Bank 2bPDFboa.cdr950928J11FD1J10LAN Filter ChipBNCRJ-45CLR1- +Mainboard DiagramSCSIDeviceHeaderJ12slot 1PrimaryIDE HardDriveHeaderJ916 bit ISAExpansionSlots10Base2/AUILANJ11LegacyISAHeaderJ8slot 2slot 3slot 4slot 6slot 7slot 8FloppyHeaderJ6SecondaryIDE HardDriveHeaderJ7RAMSIMMSocketsSpeaker HeaderJ13PrimaryCPUU25CPUClockJumperCLK1BIOSChip32-bit PCIExpansionSlots16 bit ISAExpansionSlotsslot 5VoltageRegulatorHeaderVREG1Keyboard LockJ14ResetJ15HDD LEDJ13MainPowerP8, P9KeyboardConnectorJ19-pin SerialPort COMAJ210BaseTLANJ10SystemBatterySecondaryPowerP10ParallelPortJ5ReplacementBatteryHeaderBatt_125-pinSerial PortCOMBJ4Pin1Chapter 2 - The Mainboard