Intel MB820 user manual ATX Power Installation, Installing the Memory

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INSTALLATIONS

ATX Power Installation

The system power is provided to the motherboard with the ATXP1 and ATXP2 ATX power connectors. ATXP2 is a 4-pin 12V power connector. ATXP1 is to be connected to a standard ATX power connector.

Installing the Memory

The MB820 motherboard supports four DDR memory sockets for a maximum total memory of 4GB in DDR memory type. You can install unbuffered & ECC DDR DIMMs. It supports DDR266 when installed with CPUs that have clock speeds of 400MHz. It supports DDR266/333 when installed with CPUs that have clock speeds of 533MHz. It supports DDR266/320/400 when installed with CPUs that have clock speeds of 800MHz. The board provides dual channel functionality for its DIMM slots. DIMM1/2is for one channel and DIMM3/4 is for another channel. Enabling dual channels can increase data access rates by putting two similar-size DDR modules into two same-color DIMM slots.

Basically, the system memory interface has the following features: Supports two 64-bit wide DDR data channels

Available bandwidth up to 3.2GB/s (DDR400) for single-channel mode and 6.4GB/s (DDR400) in dual-channel mode.

Supports ECC DIMMs.

Supports 128Mb, 256Mb, 512Mb, 1Gb DDR technologies. Supports only x8, x16, DDR devices with four banks Registered DIMMs not supported

Supports opportunistic refresh

Up to 16 simultaneously open pages (four per row, four rows maximum)

MB820 User’s Manual

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Contents Version USER’S ManualAcknowledgments Table of Contents This page is intentionally left blank Introduction ChecklistProduct Description Board Dimensions Installations Installing the Memory ATX Power InstallationSetting the Jumpers Jumper Locations on MB820 JP2 COM1 RS232 +5V/+12V Power Setting JP3 COM2 RS232 +5V/+12V Power SettingJP1 RS232/422/485 COM2 Selection JP4 Clear Cmos Contents JP5 COM3 RS232 +5V/+12V Power SettingJP6 COM4 RS232 +5V/+12V Power Setting JP7 DiskOnChip Address Select JP8 Onboard VGA Enable/DisableConnectors on MB820 Connector Locations on MB820 ATXP2 ATX 12V Power Connector ATXP1 ATX Power Supply ConnectorDIMM1, DIMM2 DDR Channel a Connectors DIMM3, DIMM4 DDR Channel B ConnectorsCN1 PS/2 Keyboard and PS/2 Mouse Connectors CN2 4-port USB ConnectorCN3, J3 Serial Ports CN6 VGA CRT Connector CN4 Parallel Port ConnectorCN8 Audio Connector CN7 USB and LAN RJ45 ConnectorsJ1 IrDA Connector J4 CD-In Audio ConnectorJ5, J6 Serial ATA Sata Connectors J8, J10 COM3 and COM4 Serial Ports ConnectorJ9 Wake On LAN Connector J12 System Function Connector J11 Digital I/O Connector 4 in, 4 outPower LED Pins 11 FAN1 CPU Fan Power Connector FAN2 VGA Fan Power ConnectorFAN3 Chassis Fan Power Connector RM/LC FDD1 Floppy Drive ConnectorIRQ15 IDE, IDE2 Primary and Secondary IDE ConnectorsSample Code Watchdog Timer ConfigurationMov Cl, 0F5h Call ReadReg Al, not 08h Call WriteReg Out dx, al Installations Bios Setup Bios Setup Bios IntroductionPhoenix AwardBIOS Cmos Setup Utility Date Standard Cmos SetupTime IDE Primary HDDs / IDE Secondary HDDsDrive a / Drive B Halt On VideoHard Disk Boot Priority Advanced Bios FeaturesQuick Power On Self Test CPU L1 and L2 CacheBoot Other Device First/Second/Third Boot DeviceBoot Up Floppy Seek Boot Up NumLock StatusSecurity Option Apic ModeMPS Version Control for OS OS Select for Dram 64MBAdvanced Chipset Features AGP Aperture Size IDE Integrated PeripheralsIDE DMA Transfer Access IDE HDD Block ModeOnChip Primary/Secondary PCI IDE IDE Primary/Secondary Master/Slave PIOUSB Controller On-Chip Serial ATAUSB 2.0 Controller USB Keyboard SupportUart Mode Select Parallel Port ModeChip Select Pin Power Management Setup Power ManagementAcpi Function HDD Power Down Suspend ModeVideo Off Method Video Off In SuspendResume by Alarm Power On by RingReload Global Timer Events Wake Up On LANPNP OS Install PNP/PCI ConfigurationsReset Configuration Data Resources Controlled byTemperatures/Fan Speeds/Voltages CPU Warning TemperatureShutdown Temperature PC Health StatusFrequency/Voltage Control Auto Detect DIMM/PCI ClkSpread Spectrum Load Setup Defaults Load Fail-Safe DefaultsSet Supervisor/User Password Save & Exit SetupDrivers Installation Intel 875P Chipset Software Intallation Utility Drivers Installation Drivers Installation Realtek AC97 Codec Audio Driver Installation Intel PRO LAN Drivers Installation VGA Drivers Installation Drivers Installation