Intel MB820 user manual ATXP1 ATX Power Supply Connector, ATXP2 ATX 12V Power Connector

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INSTALLATIONS

ATXP1: ATX Power Supply Connector

ATXP1 is a 20-pin ATX power supply connector. Refer to the following table for the pin out assignments.

11

1

 

 

 

Signal Name

 

 

Pin #

 

Pin #

 

 

Signal Name

 

 

 

 

 

 

 

 

 

3.3V

11

 

1

 

 

 

3.3V

 

 

 

 

 

 

 

 

 

-12V

12

 

2

 

 

 

3.3V

 

 

 

 

 

 

 

 

 

Ground

13

 

3

 

 

 

Ground

 

 

 

 

 

 

 

 

 

PS-ON

14

 

4

 

 

 

+5V

 

 

 

 

 

 

 

 

 

Ground

15

 

5

 

 

 

Ground

 

 

 

 

 

 

 

 

 

Ground

16

 

6

 

 

 

+5V

 

 

 

 

 

 

 

 

 

Ground

17

 

7

 

 

 

Ground

 

 

 

 

 

 

 

 

 

-5V

18

 

8

 

 

Power good

 

20

10

 

 

 

 

+5V

19

 

9

 

 

 

5VSB

 

 

 

 

 

+5V

20

 

10

 

 

 

+12V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ATXP2: ATX 12V Power Connector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin #

 

Signal Name

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

Ground

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

Ground

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

+12V

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

+12V

 

 

 

DIMM1, DIMM2: DDR Channel A Connectors

DIMM1 and DIMM2 are the first DDR channel connectors that must be use together at one time in order for the system to function properly.

DIMM3, DIMM4: DDR Channel B Connectors

DIMM3 and DIMM4 are the second DDR channel connectors that must be use together at one time in order for the system to function properly.

AGP1: AGP Slot

PCI1, PCI2, PCI3, PCI4: PCI Slots

SL1, SL2: ISA Slots

MB820 User’s Manual

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Page 16 Page 18
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Page 16 Page 18
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 JP1 RS232/422/485 COM2 Selection JP2 COM1 RS232 +5V/+12V Power SettingJP3 COM2 RS232 +5V/+12V Power Setting JP6 COM4 RS232 +5V/+12V Power Setting JP4 Clear Cmos ContentsJP5 COM3 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 ConnectorsCN3, J3 Serial Ports CN1 PS/2 Keyboard and PS/2 Mouse ConnectorsCN2 4-port USB Connector CN6 VGA CRT Connector CN4 Parallel Port ConnectorCN8 Audio Connector CN7 USB and LAN RJ45 ConnectorsJ1 IrDA Connector J4 CD-In Audio ConnectorJ9 Wake On LAN Connector J5, J6 Serial ATA Sata ConnectorsJ8, J10 COM3 and COM4 Serial Ports Connector J12 System Function Connector J11 Digital I/O Connector 4 in, 4 outPower LED Pins 11 FAN3 Chassis Fan Power Connector FAN1 CPU Fan Power ConnectorFAN2 VGA 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 SetupDrive a / Drive B TimeIDE Primary HDDs / IDE Secondary HDDs 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 SupportChip Select Pin Uart Mode SelectParallel Port Mode Acpi Function Power Management SetupPower Management 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 StatusSpread Spectrum Frequency/Voltage ControlAuto Detect DIMM/PCI Clk 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
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