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Toshiba QOSMIO F50 User manual

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ToshibaPersonalComputer
QosmioF50
MaintenanceManual
TOSHIBACORPORATION
ii
Qosmio 0MaintenanceManual
Copyright
©2008byToshibaCorporation.Allrightsreserved.Underthecopyrightlaws,thismanual
cannotbereproducedinanyformwithoutthepriorwrittenpermissionofToshiba.Nopatent
liabilityisassumedwithrespecttotheuseoftheinformationcontainedherein.
ToshibaPersonalComputerQosmioMaintenanceManual
FirsteditionJune.2008
Disclaimer
Theinformationpresentedinthismanualhasbeenreviewedandvalidatedforaccuracy.The
includedsetofinstructionsanddescriptionsareaccuratefortheTOSHIBAQosmioatthe
timeofthismanual'sproduction.However,succeedingcomputersandmanualsaresubjectto
changewithoutnotice.Therefore,Toshibaassumesnoliabilityfordamagesincurreddirectlyor
indirectlyfromerrors,omissions,ordiscrepanciesbetweenanysucceedingproductandthis
manual.
Trademarks
IBMisaregisteredtrademarkandIBMPCisatrademarkofInternational
BusinessMachinesCorporation.
Intel,IntelSpeedStep,Intel®CoreTM,CeleronandCentrinoaretrademarks
orregisteredtrademarksofIntelCorporation.
Windows,MicrosoftandWindowsVista®areregisteredtrademarksof
MicrosoftCorporation.
PhotoCDisatrademarkofEastmanKodak.
Bluetoothisatrademarkorregisteredtrademarkownedbyitsproprietor
andusedbyTOSHIBAunderlicense.
MemoryStickisaregisteredtrademarkandi.LINKisatrademarkofSony
Corporation.
DVDMovieFactoryisaregisteredtrademarksofUleadSystems,Inc.
LabelflashisatrademarkofYAMAHACORPORATION.
ManufacturedunderlicensefromDolbyLaboratories.
Dolbyandthedouble-DsymbolaretrademarksofDolbyLaboratories.
DolbyHomeTheaterisatrademarkofDolbyLaboratories.
PalmCheckandTouchPadaretrademarksofSynapticsIncorporated.
ExpressCardisatrademarkofPCMCIA.
ConfigFreeisatrademarkofToshibaCorporation.
Wi-FiisaregisteredtrademarkoftheWi-FiAlliance.
SecureDigitalandSDaretrademarksofSDCardAssociation.
MultiMediaCardandMMCaretrademarksofMultiMediaCardAssociation.
xD-PictureCardisatrademarkofFUJIFILMCorporation.
Othertrademarksandregisteredtrademarksnotlistedabovemaybeused
inthismanual.
Qosmio MaintenanceManual iii
Preface
Thismaintenancemanualdescribeshowtoperformhardwareservicemaintenanceforthe
ToshibaPersonalComputerQosmio0,referredtoastheQosmio0Seriesinthismanual.
Theproceduresdescribedinthismanualareintendedtohelpservicetechniciansisolatefaulty
FieldReplaceableUnits(FRUs)andreplacetheminthefield.
SAFETYPRECAUTIONS
Fourtypesofmessagesareusedinthismanualtobringimportantinformationtoyourattention.
Eachofthesemessageswillbeitalicizedandidentifiedasshownbelow.
DANGER: “Danger”indicatestheexistenceofahazardthatcouldresultindeathor
seriousbodilyinjuryifthesafetyinstructionisnotobserved.
WARNING: “Warning”indicatestheexistenceofahazardthatcouldresultinbodily
injuryifthesafetyinstructionisnotobserved.
CAUTION: “Caution”indicatestheexistenceofahazardthatcouldresultinproperty
damageifthesafetyinstructionisnotobserved.
NOTE: “Note”containsgeneralinformationthatrelatestoyoursafemaintenance
service.
Improperrepairofthecomputermayresultinsafetyhazards.Toshibarequiresservice
techniciansandauthorizeddealersorserviceproviderstoensurethefollowingsafetyprecautions
areadheredtostrictly.
Besuretofastenscrewssecurelywiththerightscrewdriver.Ifascrewisnotfully
fastened,itcouldcomeloose,creatingadangerofashortcircuit,whichcouldcause
overheating,smokeorfire.
IfyoureplacethebatterypackorRTCbattery,besuretouseonlythesamemodelbattery
oranequivalentbatteryrecommendedbyToshiba.Installationofthewrongbatterycan
causethebatterytoexplode.
iv
Qosmio 0MaintenanceManual
Themanualisdividedintothefollowingparts:
Chapter1 HardwareOverviewdescribestheQosmio0systemunitandeachFRU.
Chapter2 TroubleshootingProceduresexplainshowtodiagnoseandresolveFRU
problems.
Chapter3 TestandDiagnosticsdescribeshowtoperformtestanddiagnostic
operationsformaintenanceservice.
Chapter4 ReplacementProceduresdescribestheremovalandreplacementofthe
FRUs.
Appendices Theappendicesdescribethefollowing:
HandlingtheLCDmodule
Boardlayout
Pinassignments
Keyboardscan/charactercodes
Keylayout
Screwtorquelist
Reliability
Conventions
Thismanualusesthefollowingformatstodescribe,identify,andhighlighttermsandoperating
procedures.
Acronyms
Onthefirstappearanceandwhenevernecessaryforclarification,acronymsareenclosedin
parenthesesfollowingtheirdefinition.Forexample:
ReadOnlyMemory(ROM)
Keys
Keysareusedinthetexttodescribemanyoperations.Thekeytopsymbolasitappearsonthe
keyboardisprintedinboldfacetype.
Keyoperation
Qosmio MaintenanceManual v
Someoperationsrequireyoutosimultaneouslyusetwoormorekeys.Weidentifysuch
operationsbythekeytopsymbolsseparatedbyaplus(+)sign.Forexample,Ctrl+Pause
(Break)meansyoumustholddownCtrlandatthesametimepressPause(Break).Ifthree
keysareused,holddownthefirsttwoandatthesametimepressthethird.
Userinput
Textthatyouareinstructedtotypeinisshownintheboldfacetypebelow:
DISKCOPYA:B:
Thedisplay
Textgeneratedbythecomputerthatappearsonitsdisplayispresentedinthetypefacebelow:
Formatcomplete
Systemtransferred
vi
Qosmio 0MaintenanceManual
TableofContents
Chapter1 HardwareOverview
1.1 Features..............................................................................Error!Bookmarknotdefined.
1.2 2.5-inchHDD....................................................................Error!Bookmarknotdefined.
1.3 DVDSuperMulti(+-RDoubleLayer)..............................Error!Bookmarknotdefined.
1.4 PowerSupply.....................................................................Error!Bookmarknotdefined.
1.5 Batteries.............................................................................Error!Bookmarknotdefined.
1.5.1MainBattery.......................................................Error!Bookmarknotdefined.
1.5.2 BatteryChargingControl....................................Error!Bookmarknotdefined.
1.5.3 RTCBattery........................................................Error!Bookmarknotdefined.
Chapter2 TroubleshootingProcedures
2.1 TroubleshootingIntroduction........................................Error!Bookmarknotdefined.
2.2TroubleshootingFlowchart
……………………………………………………………
Error!Bookmarknot
defined.
2.3PowerSupplyTroubleshooting.......................................Error!Bookmarknotdefined.
2.4DisplayTroubleshooting...............................................Error!Bookmarknotdefined.
2.5 KeyboardTroubleshooting...........................................Error!Bookmarknotdefined.
2.6 ExternalUSBDevicesTroubleshooting.......................Error!Bookmarknotdefined.
2.7 TV-tunerFailureTroubleshooting................................Error!Bookmarknotdefined.
2.8 TouchPadTroubleshooting...........................................Error!Bookmarknotdefined.
2.9 SpeakerTroubleshooting..............................................Error!Bookmarknotdefined.
2.10Opticaldrivetroubleshooting.......................................Error!Bookmarknotdefined.
2. ModemTroubleshooting…………………………………………………………….
Error!Bookmarknotdefined.
Qosmio MaintenanceManual vii
2.12 ExpresscardTroubleshooting.......................................Error!Bookmarknotdefined.
2.13 IEEE1394Troubleshooting..........................................Error!Bookmarknotdefined.
2.14 WirelessLANTroubleshooting....................................Error!Bookmarknotdefined.
2.15Cameratroubleshooting................................................Error!Bookmarknotdefined.
2.16BluetoothTroubleshooting…………………...…………………………….………..
Error!Bookmarknotdefined.
2.177in1card
Troubleshooting……………………………………………………..……Error!
Bookmarknotdefined.
2.18HDDTroubleshooting………………………………………………………………..
Error!Bookmarknotdefined.
2.19CRTfailureTroubleshooting
……………………………………………………….
Error!Bookmarknotdefined.
2.20HDMITroubleshooting……………………………………………………………...
Error!Bookmarknotdefined.
2.21SPDIFTroubleshooting………….………………………………………………….
Error!Bookmarknotdefined.
2.22MICTroubleshooting……………………………………………………………….
Error!Bookmarknotdefined.
2.23FingerTroubleshooting……………………………………………………………..
Error!Bookmarknotdefined.
2.24FMtunerTroubleshooting…………………………………………………………..
Error!Bookmarknotdefined.
2.25E-SATATroubleshooting………………………………………….………………..
Error!Bookmarknotdefined.
2.26FelicaTroubleshooting………………………….…………………………………..
Error!Bookmarknotdefined.
2.27TMATroubleshooting…………………………….………….……………………..
Error!Bookmarknotdefined.
viii
Qosmio 0MaintenanceManual
2.28UWBTroubleshooting………..……………………………………………………..
Error!Bookmarknotdefined.
2.29IR-blasterTroubleshooting………..…………………………………………….…..
Error!Bookmarknotdefined.
2.30GPSTroubleshooting………………………………………………………………..
Error!Bookmarknotdefined.
Chapter3 TestsandDiagnostics
3.1 TheDiagnosticTest.........................................................Error!Bookmarknotdefined.
3.2 ExecutingtheDiagnosticTest.........................................Error!Bookmarknotdefined.
3.3 DisplayConfiguration..................................................Error!Bookmarknotdefined.
3.4 BeepsoundTest...............................................................Error!Bookmarknotdefined.
3.5 FanON/OFFTest.........................................................Error!Bookmarknotdefined.
3.6 MainBatteryChargeTest..............................................Error!Bookmarknotdefined.11
3.7 FDDTest...................…Error!Bookmarknotdefined.Error!Bookmarknotdefined.
3.8 ComputraceCheck.........................................................Error!Bookmarknotdefined.14
3.9 KeyboardTest................Error!Bookmarknotdefined.Error!Bookmarknotdefined.
3.10 Mouse(Pad)Test...........................................................Error!Bookmarknotdefined.17
3.11 LCDPixelsModeTest..................................................Error!Bookmarknotdefined.18
3.12 MagneticswitchTest.....................................................Error!Bookmarknotdefined.19
3.13 LANTest.......................................................................Error!Bookmarknotdefined.21
3.14 RTCTest........................................................................Error!Bookmarknotdefined.24
3.15 Read1394GUID...........................................................Error!Bookmarknotdefined.25
3.16SpeakerEQ
Check…………...………….…….……………..……………...…….......Error!
Bookmarknotdefined.26
3.17Button
Test…………..……………………….………….……………….….….……
Erro
r!Bookmarknotdefined.26
3.18HDCPKeyCheck..........................................................Error!Bookmarknotdefined.27
Qosmio MaintenanceManual ix
3.19Memory
check...…..……………….………………………..…………………….....Error!Bookmark
notdefined.29
3.201stHDD
Test……………………………....…………….……………....….………
Error!Bookmark
notdefined.30
3.212
nd
HDD
Test……………………………....…………….……………....….………
Error!Bookmark
notdefined.32
3.22RDMI
Test……………...………………………….………………...…..……………Error!Bookmark
notdefined.35
3.23WDMITest…………….…………………………….…………….…....….…………36
3.24MemoryR/WTest.…….…………………………….…………….…....….………… 38
Chapter4 ReplacementProcedures
4.1 General..............................................................................Error!Bookmarknotdefined.
SafetyPrecautions..........................................................
Error!Bookmarknotdefined.
BeforeYouBegin..............................................................Error!Bookmarknotdefined.
DisassemblyProcedures....................................................Error!Bookmarknotdefined.
AssemblyProcedures.........................................................Error!Bookmarknotdefined.
ToolsandEquipment.........................................................Error!Bookmarknotdefined.
ScrewTighteningTorque..................................................Error!Bookmarknotdefined.
ColorsofScrewShanks.....................................................Error!Bookmarknotdefined.
SymbolsofScrewsontheComputerBody.......................Error!Bookmarknotdefined.
Symbolexamples...............................................................Error!Bookmarknotdefined.
4.2 Battery...............................................................................Error!Bookmarknotdefined.
RemovingtheBatteryPack...............................................Error!Bookmarknotdefined.
InstallingtheBatteryPack.................................................Error!Bookmarknotdefined.
4.3 HDD..................................................................................Error!Bookmarknotdefined.
RemovingtheHDD...........................................................Error!Bookmarknotdefined.
InstallingtheHDD.............................................................Error!Bookmarknotdefined.
4.4 Memory.............................................................................Error!Bookmarknotdefined.
x
Qosmio 0MaintenanceManual
RemovingtheOptionalMemory.......................................Error!Bookmarknotdefined.
InstallingtheOptionalMemory.........................................Error!Bookmarknotdefined.
4.5 ExpressCard......................................................................Error!Bookmarknotdefined.
RemovingtheOptionalExpressCardorPCCard.............Error!Bookmarknotdefined.
InstallingtheOptionalExpressCardorPCCard..............Error!Bookmarknotdefined.
4.6 OptionalMemoryCard......................................................Error!Bookmarknotdefined.
RemovingtheOptionalMemoryCard...............................Error!Bookmarknotdefined.
InstallingtheOptionalMemoryCard................................Error!Bookmarknotdefined.
4.7 KeyboardCoverandKeyboard..........................................Error!Bookmarknotdefined.
RemovingtheKeyboardCoverandKeyboard..................Error!Bookmarknotdefined.
InstallingthekeyboardCoverandKeyboard.....................Error!Bookmarknotdefined.
4.8 ODD...................................................................................Error!Bookmarknotdefined.
RemovingtheODDBayModule.......................................Error!Bookmarknotdefined.
InstallingtheODDBayModule........................................Error!Bookmarknotdefined.
DisassemblingtheODDDrive...........................................Error!Bookmarknotdefined.
AssemblingtheODDDrive...............................................Error!Bookmarknotdefined.
4.9 TopCover..........................................................................Error!Bookmarknotdefined.
RemovingtheTopCover...................................................Error!Bookmarknotdefined.
InstallingtheTopCover.....................................................Error!Bookmarknotdefined.
4.10 DisplayAssembly..............................................................Error!Bookmarknotdefined.
RemovingtheDisplayAssembly.......................................Error!Bookmarknotdefined.
InstallingtheDisplayAssembly.........................................Error!Bookmarknotdefined.
4.11 Modem/FMCard&MiniCards........................................Error!Bookmarknotdefined.
RemovingtheModem/FMcardandMinicards................Error!Bookmarknotdefined.
InstallingtheModem/FMCard&MiniCards..................Error!Bookmarknotdefined.
4.12 Speakers.............................................................................Error!Bookmarknotdefined.
RemovingtheSpeakers......................................................Error!Bookmarknotdefined.
InstallingtheSpeakers.......................................................Error!Bookmarknotdefined.
4.13 TouchPadandFingerPrintBoard....................................Error!Bookmarknotdefined.
RemovingtheTouchPadandFingerPrintBoard.............Error!Bookmarknotdefined.
InstallingtheTouchPadandFingerPrintBoard...............Error!Bookmarknotdefined.
Qosmio MaintenanceManual xi
4.14 PowerSwitchBoard..........................................................Error!Bookmarknotdefined.
Removingthepowerswitch..............................................Error!Bookmarknotdefined.
Installingthepowerswitchboard......................................Error!Bookmarknotdefined.
4.15 VRboard...........................................................................Error!Bookmarknotdefined.
RemovingtheVRboard....................................................Error!Bookmarknotdefined.
InstallingtheVRboard......................................................Error!Bookmarknotdefined.
4.16 BluetoothCard..................................................................Error!Bookmarknotdefined.
RemovingtheBluetoothcard............................................Error!Bookmarknotdefined.
InstallingtheBluetoothcard..............................................Error!Bookmarknotdefined.
4.17 WireBridge.......................................................................Error!Bookmarknotdefined.
RemovingtheWireBridge................................................Error!Bookmarknotdefined.
InstallingtheWireBridge.................................................Error!Bookmarknotdefined.
4.18 VGAModule/Cooler.........................................................Error!Bookmarknotdefined.
RemovingtheVGAModule/Cooler..................................Error!Bookmarknotdefined.
InstallingtheVGAModule/Cooler...................................Error!Bookmarknotdefined.
4.19 IRBlasterBoard................................................................Error!Bookmarknotdefined.
RemovingtheIRBlasterBoard.........................................Error!Bookmarknotdefined.
InstallingtheIRBlasterBoard..........................................Error!Bookmarknotdefined.
4.20 TVTunerCard..................................................................Error!Bookmarknotdefined.
RemovingtheTVTunerCard...........................................Error!Bookmarknotdefined.
InstallingtheTVTunerCard.............................................Error!Bookmarknotdefined.
4.21 SystemBoard....................................................................Error!Bookmarknotdefined.
RemovingtheSystemBoard.............................................Error!Bookmarknotdefined.
InstallingtheSystemBoard...............................................Error!Bookmarknotdefined.
4.22 TMA,CPUFanandCoolingModule...............................Error!Bookmarknotdefined.
RemovingtheTMA,CPUFanandCoolingModule........Error!Bookmarknotdefined.
InstallingtheTMA,CPUFanandCoolingModule..........Error!Bookmarknotdefined.
4.23 CPU...................................................................................Error!Bookmarknotdefined.
RemovingtheCPU............................................................Error!Bookmarknotdefined.
InstallingtheCPU.............................................................Error!Bookmarknotdefined.
4.24 Sub-woofer........................................................................Error!Bookmarknotdefined.
xii
Qosmio 0MaintenanceManual
RemovingtheSub-woofer.................................................Error!Bookmarknotdefined.
InstallingtheSub-woofer...................................................Error!Bookmarknotdefined.
4.25 RJ11/FMTunerandTVTuner..........................................Error!Bookmarknotdefined.
RemovingRJ11/FMTunerandTVTuner.........................Error!Bookmarknotdefined.
InstallingtheRJ11/FMTunerandTVTuner....................Error!Bookmarknotdefined.
4.26 BKS....................................................................................Error!Bookmarknotdefined.
RemovingtheBKS............................................................Error!Bookmarknotdefined.
InstallingtheBKS..............................................................Error!Bookmarknotdefined.
4.27 DisplayMask.....................................................................Error!Bookmarknotdefined.
RemovingtheDisplayMask..............................................Error!Bookmarknotdefined.
InstallingtheDisplayMask................................................Error!Bookmarknotdefined.
4.2LCDModuleandFLInverterBoard......................Error!Bookmarknotdefined.
RemovingtheLCDModuleandFLInverterBoard..........Error!Bookmarknotdefined.
InstallingtheLCDModuleandFLInverterBoard............Error!Bookmarknotdefined.
4.29 CCDBoard,MICandAntenna..........................................Error!Bookmarknotdefined.
RemovingtheCCDBoard,MICandAntenna..................Error!Bookmarknotdefined.
InstallingtheCCDBoard,MICandAntenna....................Error!Bookmarknotdefined.
Qosmio MaintenanceManual xiii
Appendices
AppendixA HandlingtheLCDModule..................................................................................A-1
AppendixB BoardLayout.......................................................................................................B-1
AppendixC PinAssignments..................................................................................................C-1
AppendixD KeyboardScan/CharacterCodes.........................................................................D-1
AppendixE KeyLayout..........................................................................................................E-1
AppendixF SeriesScrewTorqueList.....................................................................................F-1
AppendixG Reliability............................................................................................................G-1
Chapter1
HardwareOverview
1HardwareOverview
QosmioF50MaintenanceManual 1-ii
Error!UsetheHometabtoapply2tothetextthatyouwanttoappearhere. 1Hardware
Overview
QosmioF50MaintenanceManual 1-iii
Chapter1 Contents
1.1 Features...................................................................................................................1-1
1.2 2.5-inchHDD.......................................................................................................1-13
1.3 DVDSuperMulti(+-RDoubleLayer).................................................................1-15
1.4 PowerSupply........................................................................................................1-16
1.5 Batteries................................................................................................................1-18
1.5.1 MainBattery..........................................................................................1-18
1.5.2 BatteryChargingControl......................................................................1-18
1.5.3 RTCBattery..........................................................................................1-19
1HardwareOverview
QosmioF50MaintenanceManual 1-iv
Figures
Figure1-1A IDPartsDescriptionPlacementPartA..........................................................1-8
Figure1-2 SATAHDD..................................................................................................1-13
Figure1-3 DVDSuperMultiDrive...............................................................................1-15
Tables
Table1-1 HDDSpecifications......................................................................................1-13
Table1-2 DVDSuperMultiDriveSpecifications.......................................................1-15
Table1-3 Quick/NormalChargingTime......................................................................1-18
Error!UsetheHometabtoapply2tothetextthatyouwanttoappearhere.Error!Usethe
Hometabtoapply2tothetextthatyouwanttoappearhere. 1HardwareOverview
QosmioF50MaintenanceManual 1-1
1.1 Features
TheToshibaQosmioF50afullsizenotebookPCbasedontheDualCoreProcessor,providing
high-speedprocessingcapabilitiesandadvancedfeatures.ThecomputeremploysaLithiumIon
batterythatallowsittobebattery-operatedforalongerperiodoftime.Thedisplayuses15.4-
inchWXGALCDpanel.ThePGAsocketsupportsBTOfortheCPUsothatthesystemcanbe
designedtosuityourneeds.
Thecomputerhasthefollowingfeatures:
Processor(BTO)
ThecomputerisequippedwithoneofthefollowingIntel
®
processors.
Intel
®
DualCore
TM
2DuoProcessor
Memory(BTO)
ThecomputerhastwoSODIMMsslotcomesstandardwith512MB/1GB/2GB/4GB,
acceptingBTOforyourmemoryrequirements.Itcanincorporateupto8GBofmain
memory.ItsupportsDDR2at667/800MHz.
BatteryPack
ThecomputerispoweredbyonerechargeableandremovableLithiumIonbatterypack.The
capacitycanbeeither8-cellor4-cell,dependingonthemodelofthecomputer.
RTCBattery
TheinternalRTCbatterybacksuptheRealTimeClockandcalendar.
HardDiskDrive(HDD)(BTO)
Thecomputeraccommodates9.5mmand12.5mmtwokindsofheightHDDtypeswith
followingstoragecapacities:
160/250/320GB(9.5mmthick)SATA(5,400rpm)
160/200GB(9.5mmthick)SATA(7,200rpm)
500GB(12.5mmthick)SATA(5,400rpm)
300/400/500GB(12.5mmthick)SATA(4,200rpm)
1HardwareOverview Error!UsetheHometabtoapply2tothetextthatyouwantto
appearhere.Error!UsetheHometabtoapply2tothetextthatyouwanttoappearhere.
QosmioF50MaintenanceManual 1-2
Error!UsetheHometabtoapply2tothetextthatyouwanttoappearhere.Error!Usethe
Hometabtoapply2tothetextthatyouwanttoappearhere. 1HardwareOverview
QosmioF50MaintenanceManual 1-3
ODD(BTO)
12.7mmheightDVDSuperMultidrivesupporting±RDoubleLayer
12.7mmheightDVDSuperMultidrivesupportingIRDoubleLayerw/Labelflash
Display(BTO)
TheLCDdisplaysavailablecomewithoneoffollowingtypes:
15.4”WXGACSVcolordisplay,resolution1280x800
15.4”WXGACSVcolordisplay,resolution1440x900
15.4”WXGACSVwith2-lampcolordisplay1280x800
Graphics(BTO)
IntelGM45integratedgraphicorPM45withNB9E-GS/NB9P-GS/NB9P-GE/NB9M-GE
(dependingonmodel).
Keyboard
ThecomputerisequippedwithaToshibastandard300mmkeyboard,whichhas86/87keys
supportwithoutstick-point.ItisaVistacompliancekeyboard,whereyoumayfind
Windowskeyandapplicationkeys.
PointingDevice
TheintegratedWideTouchPadandtwocontrolbuttonsinthepalmrestallowcontrolof
theon-screenpointerandsupportfunctionssuchasthescrollingofwindows.
ExternalMonitorPort
TheanalogVGAportprovidessupportforVESADDC2Bcompatiblefunctions.AWDDM
driverisreadyforVista.
UniversalSerialBus(USB)Ports
ThecomputerhasthreeUSB2.0ports.Itissupportedtodaisy-chainamaximumof127
USBdevices.Theserialdatatransferrateis480Mbpsor12Mbpsand1.5Mbps.These
portssupportPnPinstallationandhotplugging.TheyalsosupportSleepandCharge
function.
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