spacewalker HOT-671 User manual

HOT-671
Pentium™IIprocessor
Based AGPMAINBOARD
User's Manual

2
FCC Notice:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy. If not installed and used properly, in strict accor-
dance with the manufacturer’s instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures :
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/television technician for help and for additional suggestions.
The user may find the following booklet prepared by the Federal Communications Commission helpful “How to Identify
and Resolve Radio-TV Interference Problems.” This booklet is available from the U.S. Government Printing Office.
Washington, DC 20402, Stock 004-000-00345-4
FCCWarning
The user is cautioned that changes or modifications not expressly approved by the manufacturer could void the user’s
authority to operate this equipment.
Note: InorderforaninstallationofthisproducttomaintaincompliancewiththelimitsforaClassBdevice,shielded
cablesandpowercordmustbeused.
CE Notice:
Following standards were applied to this product, in order to achieve compliance with the electromagnetic
compatibility :
- Immunity in accordance with EN 50082-1: 1992
- Emissions in accordance with EN 55022: 1987 Class B.
NOTICE
Copyright 1998.
All Right Reserved
Manual Ver 1.0
All information, documentation, and specifications contained in this manual are subject to change without prior
notification by the manufacturer.
The author assumes no responsibility for any errors or omissions which may appear in this document nor does
it make a commitment to update the information contained herein.
TRADEMARKS
Intel is a registered trademark of Intel Corporation
PentiumII Processor is a registered trademark of Intel Corporation
PC/AT is a registered trademark of International Business Machine Corporation.
PS/2 is a registered trademark of IBM Corporation.
All other brand and product names referred to in this manual are trademarks or registered trademarks of their
respective holders.

3
TABLEOFCONTENTS
T
T
PREFACE ...................................................................................................................4
CHAPTER 1 INTRODUCTION ...........................................................................................5
Specification ....................................................................................................................................... 5
Accessories of HOT-671 .................................................................................................................... 7
CHAPTER 2HARDWARE CONFIGURATION........................................................................8
ThePentiumII &Celeron Processor ................................................................................................. 8
Whatdoesthe RM(RetentionMechanism) consistof ..................................................................... 9
InstalltheRetention MechanismandHeat SinkSupport ...............................................................10
InstallPentiumIIProcessor ............................................................................................................. 12
Celeron Processor S.E.P.P only RM Assembly Procedure .............................................................13
WhatdoesCeleron Processor RMconsistof .................................................................................. 14
Installthe CeleronProcessorRM. ................................................................................................... 14
InstallCeleronProcessor.................................................................................................................. 15
Jumpers ............................................................................................................................................. 16
CPUClockSpeed Selection -JP2and JP6......................................................................................16
ClearCMOS- JP11 .......................................................................................................................... 18
FlashEEPROMVpp - JP8 ............................................................................................................... 18
Keyboard&PS/2 Mousepower-onsetting(option)........................................................................ 19
Connectors ........................................................................................................................................ 19
CHAPTER 3MEMORY CONFIGURATION .........................................................................22
CHAPTER 4 FLASH UTILITY ........................................................................................23
CHAPTER 5 AWARD BIOS SETUP ..............................................................................25
The Main Menu ................................................................................................................................ 26
StandardCMOSSetup...................................................................................................................... 28
BIOS Features Setup......................................................................................................................... 30
ChipsetFeatures Setup ..................................................................................................................... 33
PowerManagementSetup ................................................................................................................ 36
PCIConfigurationSetup .................................................................................................................. 38
IntegratedPeripherals ....................................................................................................................... 40
PasswordSetting............................................................................................................................... 43
CHAPTER 6 ONBOARD SOUND CHIP SETTING .............................................................44
Introduction....................................................................................................................................... 44
Features ............................................................................................................................................. 44
SystemRequirements ....................................................................................................................... 45
ConnectingAudioDevices to 671BackPanel................................................................................ 46
Windows 95 Software Installation ................................................................................................... 47
Windows3.X/DOSSoftwareInstallation........................................................................................ 49
WindowsNT 3.51/4.0SoftwareInstallation ...................................................................................50
OS/2Warp 3.0/Merlin4.0 SoftwareInstallation ............................................................................ 51
InstallingandViewing HOT-671Utilitieson CD ..........................................................................52

4
PREFACE
P
P
HOT-671isa highlyintegratedIBM PC/ATcompatiblesystem board designedto meet
theindustry'smostdemandingdesktop applications.
Basedonthe Intel 82440EXAGPsetchipset, theIntelPentiumTMII processorwith
MMXtechnologyfeatured, and256KBor 512KB Level2 high-performance pipelined
burstsecondary168-pin DIMM socketandsupports up to256MBof EDO RAMand
SDRAM.
HOT-671isequipped with anAcceleratedGraphics Port (A.G.P.),ahigh-performance
interconnectforgraphic-intensiveapplication,such as3D applications.TheA.G.P. is
independentofthe PCI busandis designedtoexclusively use withgraphical-display
devices.TheHOT-671 supports3.3V A.G.P.deviceswith datatransferrates upto133
MHz,allowingdata throughputof500 MB/sec.
TheIntel's82440EX AGPset chipsetprovides an integratedBusMastering IDEcontrol-
lerwithtwo highperformance IDEinterfaceswhich allowsupto fourIDE devices
connectionandup to 33MB/secof datatransferrates.
Theon-board I/Ocontroller providesstandardPCI/Ofunctions:
floppydriveinterface, two FIFOserialports, an InDAdeviceport and aSPP/EPP/ECP
capable parallel port.
HOT-671isbuilt withthreePCI local busslots providing ahighbandwidth datapathfor
data-movementintensivefunctions such asgraphics,and with oneISAslot.
HOT-671provides thefoundation forcost effective,high performanceand highly
expandableplatforms,whichdeliversthelatestin theIntel PentiumTM IIprocessorand
newadvancedchipsettechnology.

5
SPECFICATION
1
1
TheHOT-671Mainboard iscarefully designedforthe demandingPC userwhowants highperfor-
manceandmany intelligent featuresin a compactpackage:
IntelChipset:
FeaturesIntel's440EX AGPset withI/Osubsystems.
CPUSupport:
Intel Pentium®IIandCeleron processor233 ~333MHz.
VersatileMemorySupports:
Equipped with two DIMM sockets support 168-pin3.3V SDRAM andEDODRAM memory
modules,totalmemory size upto256MB.
Configurablesupportfor ECC(Error CheckingandCorrecting)
PCIandISAExpansionSlots:
Providesthree32-bit PCIslotsand one16-bitISA slot.
AGPSlot:
SupportsAccelerated GraphicsPortcardsforhighperformance,component levelinterconnect
targeted at 3D graphical display applications.
OnboardI/O:
ProvidesoneFloppyport;oneoptionalPS/2 mouseconnector; two high-speedUART compatible
serial ports and one parallel port with ECP and EPP capabilities. Serial Port 2 can also be directed
fromCOM2to the Infrared Moduleforwireless connections.
OnboardPCIBusMasterIDEController:
Two UltraDMA/33 BusMaster IDE Portssupportsfour IDEdevicesup to 33MB/sec IDE trans-
fersandsupports Enhanced PIOModes 3 and4and BusMasterIDE DMA Mode2 devices.
Onboard20-pinATXPower Supply:
ProvidesATXpower connectoronboardsupports soft-on/offfunction.
SystemBIOS:
ProvideslicensedAwardV4.51PGBIOSonFlashEEPROM.
SupportsGreenPC, DMIand BundledwithNCR SCSIBIOS.
ACPI:
Support ACPI(AdvancedConfigurationandPower Interface) function. ACPI provide more
EnergySavingFeatures forthe futureoperatingsystemsupportingOS DirectPowerManagement
(OSPM)functionality.

6
OnBoardAudioController:
OPTi82C933PnP 3DAudioChip.
64VoicesWavetableSynthesizer.
Built-in Qsound Qxpander and OPTiFM Music Synthesizer.
Full-DuplexRecord/Playback atupto48KHz.
CompatiblewithGeneral MIDI,MicrosoftWindows Soundsystemand SoundBlasterPro.
BoardSize:
ATX form factor 244mm x 170mm.
AdvancedFeatures:
CPUPlug& Play--HOT-671 featuringCPUPlug & Playfunction, the userneedn'tto adjust
onboardsystemclock andCPUmultiplier. When the systemfirst power-on, BIOSwillset CPU
clock speed to 233 MHz automatically. If your CPU speed higher than 233 MHz., one thing you
only have to do is entry BIOS to set CPU speed to the higher one.
LowEMI--Spread Spectrumbuiltin - ±1.5%modulation and automaticclockshut-off of unused
PCI/SDRAMSslotstoreducethe EMI.
DualFunctionPowerButton-- Thesystem can beoneof twostates, oneis Suspend modeand
the other is the Soft-off mode. Pushing the power button for less than 4 seconds will place the
systemintoSuspend mode. Whenpushthe powerbuttonfor morethan4 seconds,thesystem
enterstheSoft-off mode.
Wake-On-LAN --The systemwill power-onautomatically byactivating ofLAN.
(Thisfunctionsupport Intel LANcardonly).
ModemRingPower-on --Thesystem willpower-onautomatically byactivatingof modemring.
PS/2Keyboard& Mouse Power-on --Thesystem will power-onautomaticallyby strokekey-
boardordouble clickPS/2mouse.
MoreAdvancedFeatures(optional):
VoltagesMonitoring--Systemvoltages levelsare monitoredtoensure stablecurrentto main
boardcomponents.
Systemvoltagesinclude VCORE and VL2 for CPU, and +5V, +12V, -5V, -12V for system.
FANStatusMonitoring-- Toprevent CPUoverheat,CPU fansismonitored forRPMand failure.
(CPUCoolingFAN withRPM sensorisrequired)
Power-onfromKeyboard/Mouse-- HOT-671 mainboard provides an optional power on function
bystrokeany key (orhot-key)on keyboard ordoubleclick on PS/2mouse.

7
ACCESSORIESOF HOT-671

8
HARDWARECONFIGURATION
2
2
The Pentium™ II & Celeron™ Processor
ThePentiumII and Celeron processoristhe next memberofthe P6 processorfamily. It
combinesthearchitecturaladvancesinthePentium Proprocessor withthe instructionset
extensionsofMMX technology. It isfullycompatible withthehuge base ofIntelarchitec-
ture-basedPCsoftware. Additional, the PentiumII processor deliversnewlevels ofperfor-
manceforadvance mediaand communicationssoftwareincluding powerful,realistic
graphicsandimaging capabilities, videoconference,and theabilityto run full-screen,full-
motionvideo. Thecombination oftheseadvanced technologiesmakes thePentiumII
processortheideal choicefoeexecuting modem 32-bitcompute-intensive and multimedia-
enhancedapplication workloads usingadvanced32-bitoperatingsystems.
ThePentiumII and Celeronprocessor both haveaseparate, 32KB,on-chip,non-blocking L1
cachewhichrun at theprocessorfrequency, Pentium IIprocessoralso has a512KBor
256KB on-board L2 non-blocking cache runs at half the processor speed.
ThePentiumII processor usingSingle Edge Contact(S.E.C.)cartridge packagingtechnol-
ogywhichenables highvolumeavailability, improvedhandling protection.
TheCeleronprocessor usingSingle EdgeProcessorPackage. (S.E.P.P.)
Figure2-0shows the front,rearand topviewsof Pentium IIprocessor(without heat sink
mounted).
Figure2-1shows theprimaryand non-primarysideof Celeronprocessorwithout heatsink
mounted and with heat sink mounted.
Figure 2-1
Figure 2-0

9
What does the RM (Retention Mechanism) consist of
PentiumIIprocessor requires theRetentionMechanism (RM) andtheHeat Sink Supportto
holdthebase processorin theS.E.C.cartridge.
Followinginstallation procedurewilldisplayhowtoinstallthesemechanism. Please
consult to your supplier for the mechanism.
RetentionMechanismpackage consistsof 2separatepartsandthe HeatSink Support
consistsof3 separateparts.
RetentionMechanism(RM) -
PlasticGuidewith captivenuts thatholdthe
S.E.C. Cartridge in the Slot1 connector.
(Referto Figure2-1-1)
RMAttachPin (RMAP) -
Plasticpinsinserted throughthe RMtosecure
ittothe mainboard(four requiredperAssembly).
(Referto Figure2-1-2)
Heat Sink Support Base (HSSBASE) -
Plasticsupportbarmountedtothemainboard
undertheATX heat sink.
(Referto Figure2-1-3)
HSSPin(HSSPIN) -
Plasticpinsinserted through theHSSBASEto secure
ittothe mainboard(tworequired perAssembly).
(Referto Figure2-1-4)
HSSTopBar (HSSTOP) -
PlasticbarthatclipsontotheHSSBASE
throughthefins on theATXheat sink.
(Referto Figure2-1-5)
Figure 2-1-1
Figure 2-1-3
Figure 2-1-4
Figure 2-1-5
Figure 2-1-2

10
Install the Retention Mechanism and Heat Sink Support
Placethemainboard on aworkbench (not inachassis). Besurethat the mainboardis bare
(thatis,no SIMMs, cables,or cards areinstalled).
InstalltheRetentionMechanism:
1.Findsout the RetentionMechanism(RM)
MountingHolesand "Pin 1" markofSlot 1
onHOT-671mainboard.
(RefertoFigure 2-2)
2.Insertthe RetentionMechanism(RM)
around theSlot 1. Besure the SquareCut
Mark ofRMhave thesameorientation of
Slot1pin 1.(Refer toFigure2-3)
3.Insertfour RM AttachPin through theRM
tosecureit tothe mainboard(fourrequired
per Assembly). (Refer to Figure 2-3)
Figure 2-2
Figure 2-3

11
InstalltheHeatSinkSupport:
Beforeyouinstall the HeatSinkSupport, please check yourPentiumII processor,ifyou have
anIntelboxed processor(Refer toFigure2-4), youcanignore thissection.In Intelboxed
processorkit,it will includesit'sown Heat SinkSupportaccessories and installmanual,you
canInstallthe Heat SinkSupportonto the mainboardbyfollowing the Intelprocessorkit's
instructions.
Figure2-5shows theOEM typePentiumIIprocessorwith activeheatsink.
1.Findsout theHeatSink Support(HSS)
MountingHoleson HOT-671 main
board.Noticethat one holeislarger than
theotherhole. (Refer toFigure2-1)
2.Thereare two plasticpegson the
bottom of Heat Sink Support Base
(HSSBASE) bar. Mount the two black
plastic pegs onto the mainboard. Notice
that one hole and the bar of one peg are
largerthanthe other holeandpeg. (Refer
to Figure 2-6)
3.Insertthe Heat SinkPins(HSSPIN)
throughtheHSSBASE to secureitto the
mainboard.(Referto Figure2-6)
4.Insertthe Pentium IIintothe RM
firmly(Pleaserefer to"InstallPentium II
processor" section), Slide the Heat Sink
TopBar(HSSTOP)onthe supports
forwardtoclip ontotheHSSBASE
throughthefins ofHeatSink. (Referto
Figure2-7)
Figure 2-4 Figure 2-5
Figure 2-6
Figure 2-7

12
Install Pentium™ II Processor
Figure 2-9
Pushthelatches onthe processortowardthe centerof theprocessoruntil theyclick intoplace.
Holdtheprocessor so thatthefan shroud isfacingtoward the HeatSinkSupport Base baron
themainboard. Slidethe processor intothe Retention Mechanism.Ensurethat thealignment
notchinthe processor fitsoverthe pluginSlot 1. Pushthe processor downfirmly,with even
pressureonboth sides ofthetop, until itisseated.
Pushthelatches on theprocessoroutward untiltheyclick into placeinthe Retention Mecha-
nism.Thelatches must be securedfor proper electrical connectionofthe processor. Slide the
HeatSinkTop Bar(HSSTOP)on thesupportsforward toclip onto theHSSBASE through the
finsofHeat Sink. (Alsorefer to "InstallHeatSink Support"section)
Attach the end of the power cable to the three-pin connector on the mainboard or to the power
cordofATX power supply(dependon powercabletype of Fan/HeatSink).

13
Celeron™Processor S.E.P.P.Only Retention MechanismAssembly
Procedures
Theseprocedureshave beenincludedto help assemblethe S.E.P.P. (Single
EdgeProcessor Package)only RetentionMechanism.
Pleasefollowthem exactly:
RequiredComponents
SEPP(Figure1)
Heatsink(Figure 2)
HeatsinkRetention Clip(Figure3)
Primary Side
Figure 2
Figure 1
Figure 3
Procedures
Assembleallparts on a staticfreebench using
properoperatorgrounding and anESDmat.
Carefullyinsertall four heatsinkcliplegs into
SEPP.(Figure 4)
Clip basemust belocated onthe non-primary
side.(Figure 5) FYI - The side of the clip plate
whichtouchesthe substrateis coveredwitha
mylarinsulator. Thisinsulatorpreventstheclip
from shorting lines on the substrate.
Beforeyoufully engage twolegsof theclipinto
theheatsink(Figure 6),makesure youremove
the blue film covering the thermal interface.
The blue film protects the thermal interface
fromdamageduring shipping.
Grasptheheatsink clipassemblybetween the
clip base and the heatsink. Do not bend or
applypressuredirectly toSEPP.
Usinganonmetallic stockorscrew driver,push
theremainingtwo cliplegs intotheheatsink.
Caution: Takecarenot tocontactpassively or
scratchSEPPwhen using screwdriveror bar
stock.
Verify that all the feet on the clip are fully
engagedandseated ontheheatsink. (Figure7)
Non-primarySide
Figure 4
Non-primarySide
Figure 5
Primary Side
Figure 6
Figure 7

14
What does the Celeron™ Processor RM consist of
Figure 8
Figure 9
Install the Celeron™ Processor RM
Celeron™ Processor requirestheRetention Mechanism(RM)to holdthebase processorin the
S.E.P.P.
Followinginstallationprocedure willdisplay howtoinstall thesemechanism. Pleaseconsult to
yoursupplierfor the mechanism.
RetentionMechanismpackageconsistsof 2sets separateparts.
Eachsetconsists of oneRM, two Postsandtwo lockpins.
RetentionMechanism(RM) -
TwoPlastic Guidesthat holdthe
S.E.P.P in the Slot 1 connector.
(RefertoFigure 8)
Post Pins -
FourPostpins are push intotheRM's holes
to fix RM on the PCB.
Lock Pins -
FourLockpins are push intothePost holes
to lock up RM on the PCB.
Placethemainboard on aworkbench (not inachassis). Besurethat the mainboardis bare
(thatis,no SIMMs, cables,or cards areinstalled).
1. Findsoutthe RetentionMechanism(RM) Mount-
ingHolesof Slot 1on HOT-671 mainboard.
(RefertoFigure 9)
2. InserttwoRetentionMechanism(RM)facetoface
on opposite side of the Slot 1.(Refer to Figure 9)
3. InsertfourPost Pin throughtheRM to fixitto the
mainboard. (RefertoFigure 9)
4. Insert four Lock Pin through the Post Pin to lock
RMtothe mainboard.(RefertoFigure 9)

15
Install Celeron™ Processor
Figure 11Figure 10
Holdtheprocessor sothatthe Heatsink isfacing toward theDIMMsockets onthemainboard.
Slidetheprocessor intothe RetentionMechanism.Push theprocessordown firmly,with even
pressureonboth sidesofthe top,untilit is seated.(Refer to Figure10 and Figure11)

16
Jumpers
CPU Clock Speed Selection - JP2 and JP6
HOT-671featuringCPU Plug &Playfunction, theuserneedn't to adjustonboard system clock
and CPU multiplier. When the system power-on first time, BIOS will set CPU clock
speed to233MHz automatically. IfyourCPU speed higherthan233 MHz.,youonly have
to entry BIOS to set CPU speed to the higher one.
HOT-671mainboardfeatures a clockgenerator to provideadjustablesystem clockfrequency.
JP2isa 6-pin jumpers whichdetermine the system clockfrequency50 MHz to83MHz.
CPU Plug & Play function is supported by66MHz.
HOT-671mainboardprovides Jumper groupofJP6 to figuretheCPU core clockmultiplier.
Byinsertingmini jumpers onMANUALgroup, the usercanfigure the HostBusClock/CPU
CoreClockratio (multiplier)manually.
CPU Plug & Play function is supported when an Jumper Pack inserted on
AUTOgroup.
Figure2-10
Listeddiagramson rightside showthesample positiononjumper groupof JP6:
1) SettingCPUClock fromBIOS
-jumperpack on AUTO.
(Factorydefault)
2) Adjustmultipliermanually fromhardware
-jumperpack on MANUAL,multiplierset to5Xmanually.
Figure2-10shows the positionofJP2 and JP6onthe mainboard.
Severalhardwaresettings are madethroughthe useofjumper caps toconnectjumper pins on
the main board. The jumper's pin 1 on main board will be on the top or on the left when hold-
ingthemainboardwith thekeyboard connectorawayfrom yourself.
Jumpers with two pins will be shown as for Close (On) and for Open (Off).
To connect the pins, simply place a plastic jumper cap over the two pins.

17
MultiplierJP6MultiplierJP6
Setting
By
BIOS
3.5
4
2 4.5
2.5 5
3
CPUClockConfiguration Tableshowsthe Pentium II/CeleronProcessor 233MHz, 266MHz,
300MHzand333MHz quicksettingon themainboard.
SystemClockTable (Table2-2)shows allofthe systembusclocks thatthemainboard canoffer.
MultiplierTable(Table 2-3) showsall of themultipliersthat themainboardcan support.
PentiumII
ProcessorSystem Clock Multiplier
233 MHz 66 MHz 3.5 x
266 MHz 66 MHz 4 x
300 MHz 66 MHz 4.5 x
333 MHz 66 MHz 5 x
System
Clock PCIBus Clock JP2
50 MHz25 MHz
60 MHz30 MHz
66 MHz33 MHz
75 MHz37.5MHz
83 MHz41.5MHz
Table 2-1
System Clock Configuration Table
CPU Configuration Table Multiplier Table
NOTE: 75&83MHzareforover-clockusage,itisnotarecommended
generalpractice.
Support
CPU Plug & Play
Table 2-2
Table 2-3

18
Clear CMOS - JP11
Flash EEPROM Vpp - JP8
HOT-671 mainboard supports jumper JP11fordischargingmainboard'sCMOSmemory.
This jumper can clear the CMOS data stored in the Giga I/O chip. To clear the CMOS data
pleasefollowlisted steps:
1) Turn off the PC,
2)Removemini jumperfromJP11 pin1-2,
3)Insertmini jumper toJP11pin 2-3 forabrief while,
4)Removemini jumper fromJP11in 2-3,
5)Reinsertmini jumper toJP11pin 1-2,
6) Turn on the PC.
HOT-671mainboardsupports two types ofFlash EEPROM: 5 voltand12 volt. Bysettingup
jumperJP8,the main boardcan use both5Vor 12VflashEEPROM with newsystem BIOS
filesasthey come available.
JP8Pin 2-3Close
for5VFlashEEPROM
JP8Pin 1-2Close
for12VFlashEEPROM
Figure2-11

19
HOT-671mainboardprovides anoptionalpower-on functionbystroke any key(or hot-key)
onkeyboardor double clickonPS/2 mouse.
Note:Power-onbyserialmouseisnot supported
JP1andJP4 are thejumpersused to setthefunctions ofkeyboard& PS/2 mousepower-on
Enabled or Disabled.
Whenyouenabled K/B&PS/2 Mouse Power-ONfunction, you alsohaveto settheproper
item on POWER ON functioncategory ofIntegratedPeripheralsof BIOSsetup.
Keyboard & PS/2 Mouse Power-On Setting (option) - JP1, JP4
Connectors
Front Panel Connectors
Hardware Reset Connector - J16
Attach 2-pin hardware reset switch to it. Closing the
resetswitch restartsthesystem.
Speaker Connector - JP9
PCspeakerconnector mayattacha 4-pinPC speaker
cablefromthe case tothisconnector.
HD LED Connector - S3
Attacha2-pin IDE driveLEDcable tothisconnector.
TheLEDlights when anIDE device isactive.
Figure2-12
Table 2-4
K/B&PS/2Mouse Power-OnJP4
Keyboard &
PS/2 Mouse
Power-On
Disabled
PS/2 Mouse
Power-On
Enabled
Keyboard &
PS/2 Mouse
Power-On
Enabled
Keyboard
Power-On
Enabled

20
Back Panel Connectors
COM1/COM2Connectors
AttachCOM1/COM2device cablestothese connectors.
PS/2 Keyboard & PS/2 Mouse Connector
Two6-pinfemale PS/2 keyboard&Mouse Connectors islocatedat therearof the mainboard.
PS/2Mouseon top ofconnectorand PS/2 Keyboardonthe bottom ofconnector. Plugthe PS/2
keyboardandmouse jack intothisconnector.
Parallel Port Connector
A 25-pin female connector is located at the rear of the main board. Plug the parallel port device
cableintothisconnector.
USB1/USB2PortConnectors
Twofemaleconnectors are located attherear of theboard. Plug
theUSBdevices jack intothisconnector.
OtherConnectors
ATX Power Supply Connector - J4
Itisa twenty-pin maleheaderconnector. Plug the connectorfrom
thepowerdirectly ontotheboard connectorwhile makingsurethe
pin1is in itsposition. Themain board requiresapower supply
withatleast 200wattsand powergood signal.
IR Connector - J3
Infrareddeviceconnector mayattach a5-pininfrared
device cable to this connector for enabling the infrared
transferfunction. Thismainboardmeets thespecification
of ASKIR and HPSIR. Figure 2-15 shows J3's
pinassignment.
Figure2-14
Figure2-13
Figure2-15