Arkon AIMB-258 user manual Installing the CPU Heatsink and Fan, Motherboard Hole

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Warning! After installation, make sure to plug-in the ATX power cable to the moth- erboard.

1.12.2Installing the CPU Heatsink and Fan

The Intel® Pentium® M / Celeron® M processor (supports mPGA478M, Micro- FCPGA) requires a specially designed heatsink and fan assembly to ensure optimum thermal condition and performance.

Caution! If you purchased a separate CPU heatsink and fan assembly, make sure that you have properly applied Thermal Interface Material to the CPU heatsink or CPU before you install the heatsink and fan assembly.

Motherboard Hole

1.Place the heatsink on top of the

installed CPU, making sure that the four screws match the holes on the motherboard.

Note! Orient the heatsink and fan assembly such that the CPU fan cable is closest to the CPU fan connector.

2.Connect the CPU fan cable to the connector on the motherboard labelled CPUFAN1.

AIMB-258 User Manual

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Contents AIMB-258 Safety Information Electrical safetyCertifications Technical Support Packing ListContents Bios Operation Appendix BTable B.3 DVI Connector VGA1B Viii Chapter Before You Proceed Placement DirectionMotherboard Overview Product Introduction Screw HolesMotherboard Layout Motherboard LayoutSpecifications PCIOperating System support list Operation System AIMB-258Board Diagram ChapterOrdering Information Bracket View AccessoriesRiser Card JSETCOM2 COM2 RS232/422/485 Mode Selection Layout Content ListJumper Setting List JSETCOM1 COM1/+5 V/+12 V SelectionPSON1 ATX, AT Mode Selection J1LCD Power 3.3 V/5.5 V SelectionCMOS1 Clear Cmos Central Processing Unit CPU for AIMB-258 JWDT1 Watchdog Timer Output OptionJobs HW monitor Installing the CPU Product Introduction Installing the CPU Heatsink and Fan Motherboard HoleProduct Introduction Uninstalling the CPU Heatsink and Fan Dimm Sockets Location System MemorySystem Memory Memory Support List Sodimm DDR310 Rear Panel Connectors ConnectorsRear Panel Connectors 11 LEDsCPU Fan Connector CPUFAN1 System Fan Connector SYSFAN1, SYSFAN2 Page Reset JFP1 / Reset Front Panel Connector JFP1/JFP2/JFP3ATX soft power switch JFP1 / Pwrsw HDD LED JFP2 / HddledUSB 2.0 Connector USB56, USB78 Power LED and keyboard lock connector JFP312 ATX power supply LED status No support for AT power ATX Power Connector ATX1 Important notes on the Motherboard Power RequirementsLCD Inverter Connector VP1 Lvds Connector LVDS1 SATA1 SATA2 PCIe x 16 Slot Pcie X SPI Flash ConnectorSPICN1 Product Introduction CF connector Bios Operation Bios Introduction Bios SetupMain Menu Standard Cmos Features Advanced Bios Features Advanced Chipset Features Integrated Peripherals Onboard Device Super IO DeviceUSE Device Setting Power Management Setup HDD Power Down Mode Disabled Power Management User DefinedSuspend Mode Disabled PowerOn by LAN Enabled8 PnP/PCI Configurations PC Health StatusCurrent System Temperature Load Setup Defaults Set PasswordCPU Warning Temperature Current CPU TemperatureTo Change Password To Establish PasswordTo Disable Password Chipset Software Install Utility Before you Begin IntroductionWindows Vista/XP Driver Setup Page VGA Setup Introduction LAN Configuration Installation FeaturesWindows Vista/XP Driver Setup Realtek RTL8111C LAN Configuration Page Appendix a Watchdog timer overview Programming the Watchdog TimerProgramming the Watchdog Timer Appendix a Programming the Watchdog Timer Table A.1 Watchdog Timer Registers Example Program Page Appendix a Programming the Watchdog Timer Page Appendix B VGA Connector VGA1A USB Connector USB56,USB78DVI Connector VGA1B RS-232 Serial Port COM1~COM2 Table B.4 RS-232 Serial Port COM1~COM2RS-232 Serial Port COM3 ~ COM6 Table B.5 RS-232 Serial Port COM23Table B.6 PS/2 Keyboard/ Mouse Connector KBMS1 PS/2 Keyboard/ Mouse Connector KBMS1CPU Fan Power Connector CPUFAN1 Table B.7 CPU Fan Power Connector CPUFAN1Table B.8 Power LED and Keylock Connector JFP3 Power LED & Keyboard Lock Connector JFP3Table B.9 External Speaker Connector JFP2/SPEAKER Table B.10 Audio Front Panel Connector JFP1/ Reset Audio Front Panel Connector FPAUD1Table B.11 Audio front panel connector FPAUD1 Gpio Pin Header GPIO1 Table B.12 Gpio Pin Header GPIO1Lvds Connector LVDS1 Table B.13 Lvds Connector LVDS1Lvds Invert VP1 Lvds Power Jumper J1Table B.14 Lvds Power Jumper J1 Table B.15 Lvds Invert VP1Table B.16 System I/O Ports System I/O PortsDMA Channel Assignments Table B.17 DMA Channel AssignmentsTable B.18 Interrupt Assignments Interrupt Assignments19 1st MB Memory Map Table B.19 1st MB Memory MapAppendix B Pin Assignments