ThinkCentre
UserGuide
MachineTypes:0896,0958,1112,2116,3498,3593,3595,3597,
3617,3634,3655,3662,3665,and3675
Note:Beforeusingthisinformationandtheproductitsupports,besuretoreadandunderstandthe
“Importantsafetyinformation”onpagevandAppendixA“Notices”onpage117.
ThirdEdition(August2012)
©CopyrightLenovo2012.
LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwareisdeliveredpursuantaGeneralServicesAdministration
“GSA”contract,use,reproduction,ordisclosureissubjecttorestrictionssetforthinContractNo.GS-35F-05925.
Contents
Importantsafetyinformation......v
Serviceandupgrades.............v
Staticelectricityprevention...........v
Powercordsandpoweradapters........vi
Extensioncordsandrelateddevices.......vi
Plugsandoutlets..............vii
Externaldevices..............vii
Heatandproductventilation.........vii
Operatingenvironment...........viii
Modemsafetyinformation..........viii
Lasercompliancestatement..........ix
Powersupplystatement............ix
Cleaningandmaintenance...........ix
Chapter1.Productoverview......1
Features..................1
Specications................4
Softwareoverview..............4
SoftwareprovidedbyLenovo........5
AdobeReader..............7
Antivirussoftware.............7
Locations..................7
Locatingconnectors,controls,andindicators
onthefrontofyourcomputer........8
Locatingconnectorsontherearofyour
computer................9
Locatingcomponents..........11
Locatingpartsonthesystemboard....11
Locatinginternaldrives.........14
Machinetypeandmodellabel.......15
Chapter2.Usingyourcomputer...17
Frequentlyaskedquestions.........17
Usingthekeyboard.............17
UsingWindowsshortcutkeys.......17
Usingangerprintreader........18
Usingthewheelmouse...........18
Adjustingaudio..............18
Aboutyourcomputeraudio........18
Settingthevolumefromthedesktop....19
SettingthevolumefromControlPanel...19
UsingCDsandDVDs............19
HandlingandstoringCDandDVDmedia..20
PlayingaCDorDVD..........20
RecordingaCDorDVD.........20
Chapter3.Y ouandyourcomputer..23
Accessibilityandcomfort..........23
Arrangingyourworkspace........23
Comfort...............23
Glareandlighting............24
Aircirculation.............24
Electricaloutletsandcablelengths.....24
Registeringyourcomputer..........25
Movingyourcomputertoanothercountryor
region..................25
Voltage-selectionswitch.........25
Replacementpowercords........26
Chapter4.Security..........27
Securityfeatures..............27
Lockingthecomputercover.........28
Attachinganintegratedcablelock.......29
Usingpasswords..............29
BIOSpasswords............29
Windowspasswords..........30
Conguringthengerprintreader.......30
Usingandunderstandingrewalls.......30
Protectingdataagainstviruses........30
Chapter5.Installingorreplacing
hardware...............33
Handlingstatic-sensitivedevices.......33
Installingorreplacinghardware........33
Installingexternaloptions........33
Removingthecomputercover.......34
Removingandreinstallingthefrontbezel..35
InstallingorreplacingaPCIcard......36
Installingorreplacingamemorymodule...39
Installingorreplacingtheopticaldrive...41
Replacingthebattery..........43
Replacingtheheatsinkandfanassembly..44
Replacingthepowersupplyassembly...46
Replacingthemicroprocessor.......47
Installingthesolidstatedrive.......50
Replacingtheprimaryharddiskdrive....51
Replacingtherearfanassembly......53
ReplacingthefrontaudioandUSB
assembly...............55
ReplacingtheWiFiunits.........56
InstallingorremovingtherearWiFiantenna.62
InstallingorremovingthefrontWiFiantenna.63
Replacingthekeyboard.........65
Replacingthemouse..........66
©CopyrightLenovo2012
i
Completingthepartsreplacement.....67
Chapter6.Recoveryinformation...69
Creatingandusingrecoverymedia......69
Creatingrecoverymedia.........69
Usingrecoverymedia..........70
Performingbackupandrecoveryoperations...70
Performingabackupoperation......70
Performingarecoveryoperation......71
UsingtheRescueandRecoveryworkspace...71
Creatingandusingarescuemedium......72
Creatingarescuemedium........72
Usingarescuemedium.........73
Reinstallingpreinstalledapplicationsanddevice
drivers..................73
Reinstallingsoftwareprograms........74
Reinstallingdevicedrivers..........75
Solvingrecoveryproblems..........75
Chapter7.UsingtheSetupUtility
program................77
StartingtheSetupUtilityprogram.......77
Viewingandchangingsettings........77
Usingpasswords..............77
Passwordconsiderations.........78
Power-OnPassword..........78
AdministratorPassword.........78
HardDiskPassword...........78
Setting,changing,anddeletingapassword.78
Erasinglostorforgottenpasswords(clearing
CMOS)................79
Enablingordisablingadevice........79
Selectingastartupdevice..........80
Selectingatemporarystartupdevice....80
Selectingorchangingthestartupdevice
sequence...............80
EnablingErPcompliancemode........80
ExitingfromtheSetupUtilityprogram.....81
Chapter8.Updatingsystem
programs...............83
Usingsystemprograms...........83
Updating(ashing)theBIOSfromadisc....83
Updating(ashing)theBIOSfromyouroperating
system..................84
RecoveringfromaPOST/BIOSupdatefailure..84
Chapter9.Preventingproblems...87
Keepingyourcomputercurrent........87
Gettingthelatestdevicedriversforyour
computer...............87
Updatingyouroperatingsystem......87
UsingSystemUpdate..........88
Cleaningandmaintenance..........88
Basics................88
Cleaningyourcomputer.........89
Goodmaintenancepractices.......90
Movingyourcomputer...........90
Chapter10.Troubleshootingand
diagnostics..............93
Basictroubleshooting............93
Troubleshootingprocedure..........94
Troubleshooting..............94
Audioproblems............95
CDproblems.............96
DVDproblems.............97
Intermittentproblems..........99
Keyboard,mouse,orpointingdevice
problems...............99
Monitorproblems............101
Networkingproblems..........102
Optionproblems............105
Performanceandlockupproblems.....106
Printerproblems............108
Serialportproblems...........109
Softwareproblems...........109
USBproblems.............110
Diagnosticprograms............110
LenovoSolutionCenter.........111
LenovoThinkVantageT oolbox.......111
PC-DoctorforDOS...........111
Chapter11.Gettinginformation,help,
andservice.............113
Informationresources............113
LenovoThinkVantageT ools........113
LenovoWelcome............113
HelpandSupport............113
SafetyandWarranty...........113
LenovoWebsite(http://www.lenovo.com)..113
LenovoSupportWebsite.........114
Helpandservice..............114
Usingthedocumentationanddiagnostic
programs...............114
Callingforservice............114
Usingotherservices..........115
Purchasingadditionalservices......115
AppendixA.Notices.........117
Trademarks................118
iiThinkCentreUserGuide
AppendixB.Regulatory
information.............119
Exportclassicationnotice..........119
Televisionoutputnotice...........119
Electronicemissionsnotices.........119
FederalCommunicationsCommission
DeclarationofConformity........119
Additionalregulatoryinformation.......121
AppendixC.WEEEandrecycling
statements.............123
ImportantWEEEInformation.........123
Recyclinginformation............123
RecyclinginformationforBrazil........124
BatteryrecyclinginformationforT aiwan.....124
BatteryrecyclinginformationfortheEuropean
Union..................125
AppendixD.RestrictionofHazardous
SubstancesDirective(RoHS)....127
ChinaRoHS................127
TurkishRoHS...............127
UkraineRoHS...............127
IndiaRoHS................128
AppendixE.EkBilgiler.......129
AppendixF .Servisistasyonlari...131
Index.................139
©CopyrightLenovo2012
iii
ivThinkCentreUserGuide
Importantsafetyinformation
CAUTION:
Beforeusingthismanual,besuretoreadandunderstandalltherelatedsafetyinformationforthis
product.RefertotheinformationinthissectionandthesafetyinformationintheThinkCentreSafety
andWarrantyGuidethatyoureceivedwiththisproduct.Readingandunderstandingthissafety
informationreducestheriskofpersonalinjuryanddamagetoyourproduct.
IfyounolongerhaveacopyoftheThinkCentreSafetyandWarrantyGuide,youcanobtainaPortable
DocumentFormat(PDF)versionfromtheLenovo
LenovoSupportWebsitealsoprovidestheThinkCentreSafetyandWarrantyGuideandthisThinkCentre
UserGuideinadditionallanguages.
®
SupportWebsiteathttp://www.lenovo.com/support.The
Serviceandupgrades
DonotattempttoserviceaproductyourselfunlessinstructedtodosobytheCustomerSupportCenteror
yourdocumentation.OnlyuseaServiceProviderwhoisapprovedtorepairyourparticularproduct.
Note:Somecomputerpartscanbeupgradedorreplacedbythecustomer.Upgradestypicallyare
referredtoasoptions.ReplacementpartsapprovedforcustomerinstallationarereferredtoasCustomer
ReplaceableUnits,orCRUs.Lenovoprovidesdocumentationwithinstructionswhenitisappropriatefor
customerstoinstalloptionsorreplaceCRUs.Y oumustcloselyfollowallinstructionswheninstallingor
replacingparts.TheOffstateofapowerindicatordoesnotnecessarilymeanthatvoltagelevelsinsidea
productarezero.Beforeyouremovethecoversfromaproductequippedwithapowercord,alwaysmake
surethatthepoweristurnedoffandthattheproductisunpluggedfromanypowersource.Formore
informationonCRUs,refertoChapter5“Installingorreplacinghardware”onpage33
questionsorconcerns,contacttheCustomerSupportCenter.
Althoughtherearenomovingpartsinyourcomputerafterthepowercordhasbeendisconnected,the
followingwarningsarerequiredforyoursafety.
CAUTION:
.Ifyouhaveany
Hazardousmovingparts.Keepngersandotherbodypartsaway.
CAUTION:
BeforereplacinganyCRUs,turnoffthecomputerandwaitthreetoveminutestoletthecomputer
coolbeforeopeningthecover.
Staticelectricityprevention
Staticelectricity,althoughharmlesstoyou,canseriouslydamagecomputercomponentsandoptions.
Improperhandlingofstatic-sensitivepartscancausedamagetothepart.Whenyouunpackanoption
©CopyrightLenovo2012
v
orCRU,donotopenthestatic-protectivepackagecontainingthepartuntiltheinstructionsdirectyou
toinstallit.
WhenyouhandleoptionsorCRUs,orperformanyworkinsidethecomputer,takethefollowingprecautions
toavoidstatic-electricitydamage:
•Limityourmovement.Movementcancausestaticelectricitytobuilduparoundyou.
•Alwayshandlecomponentscarefully.Handleadapters,memorymodules,andothercircuitboardsbythe
edges.Nevertouchexposedcircuitry.
•Preventothersfromtouchingcomponents.
•Whenyouinstallastatic-sensitiveoptionorCRU,touchthestatic-protectivepackagecontainingthe
parttoametalexpansion-slotcoverorotherunpaintedmetalsurfaceonthecomputerforatleasttwo
seconds.Thisreducesstaticelectricityinthepackageandyourbody.
•Whenpossible,removethestatic-sensitivepartfromthestatic-protectivepackagingandinstallthepart
withoutsettingitdown.Whenthisisnotpossible,placethestatic-protectivepackagingonasmooth,
levelsurfaceandplacethepartonit.
•Donotplacethepartonthecomputercoverorothermetalsurface.
Powercordsandpoweradapters
Useonlythepowercordsandpoweradapterssuppliedbytheproductmanufacturer.
Thepowercordsshallbesafetyapproved.ForGermany,itshallbeH05VV-F ,3G,0.75mm
othercountries,thesuitabletypesshallbeusedaccordingly.
Neverwrapapowercordaroundapoweradapterorotherobject.Doingsocanstressthecordinwaysthat
cancausethecordtofray,crack,orcrimp.Thiscanpresentasafetyhazard.
Alwaysroutepowercordssothattheywillnotbewalkedon,trippedover,orpinchedbyobjects.
Protectpowercordandpoweradaptersfromliquids.Forinstance,donotleaveyourpowercordorpower
adapternearsinks,tubs,toilets,oronoorsthatarecleanedwithliquidcleansers.Liquidscancausea
shortcircuit,particularlyifthepowercordorpoweradapterhasbeenstressedbymisuse.Liquidsalsocan
causegradualcorrosionofpowercordterminalsand/ortheconnectorterminalsonapoweradapter,
whichcaneventuallyresultinoverheating.
Alwaysconnectpowercordsandsignalcablesinthecorrectorderandensurethatallpowercord
connectorsaresecurelyandcompletelypluggedintoreceptacles.
Donotuseanypoweradapterthatshowscorrosionattheacinputpinsorshowssignsofoverheating(such
asdeformedplastic)attheacinputoranywhereonthepoweradapter.
Donotuseanypowercordswheretheelectricalcontactsoneitherendshowsignsofcorrosionor
overheatingorwherethepowercordappearstohavebeendamagedinanyway.
2
,orbetter.For
Extensioncordsandrelateddevices
Ensurethatextensioncords,surgeprotectors,uninterruptiblepowersupplies,andpowerstripsthatyouuse
areratedtohandletheelectricalrequirementsoftheproduct.Neveroverloadthesedevices.Ifpowerstrips
areused,theloadshouldnotexceedthepowerstripinputrating.Consultanelectricianformoreinformation
ifyouhavequestionsaboutpowerloads,powerrequirements,andinputratings.
viThinkCentreUserGuide
Plugsandoutlets
Ifareceptacle(poweroutlet)thatyouintendtousewithyourcomputerequipmentappearstobedamaged
orcorroded,donotusetheoutletuntilitisreplacedbyaqualiedelectrician.
Donotbendormodifytheplug.Iftheplugisdamaged,contactthemanufacturertoobtainareplacement.
Donotshareanelectricaloutletwithotherhomeorcommercialappliancesthatdrawlargeamountsof
electricity;otherwise,unstablevoltagemightdamageyourcomputer,data,orattacheddevices.
Someproductsareequippedwithathree-prongedplug.Thisplugtsonlyintoagroundedelectricaloutlet.
Thisisasafetyfeature.Donotdefeatthissafetyfeaturebytryingtoinsertitintoanon-groundedoutlet.If
youcannotinserttheplugintotheoutlet,contactanelectricianforanapprovedoutletadapterortoreplace
theoutletwithonethatenablesthissafetyfeature.Neveroverloadanelectricaloutlet.Theoverallsystem
loadshouldnotexceed80percentofthebranchcircuitrating.Consultanelectricianformoreinformation
ifyouhavequestionsaboutpowerloadsandbranchcircuitratings.
Besurethatthepoweroutletyouareusingisproperlywired,easilyaccessible,andlocatedclosetothe
equipment.Donotfullyextendpowercordsinawaythatwillstressthecords.
Besurethatthepoweroutletprovidesthecorrectvoltageandcurrentfortheproductyouareinstalling.
Carefullyconnectanddisconnecttheequipmentfromtheelectricaloutlet.
Externaldevices
DonotconnectordisconnectanyexternaldevicecablesotherthanUniversalSerialBus(USB)and1394
cableswhilethecomputerpowerison;otherwise,youmightdamageyourcomputer.Toavoidpossible
damagetoattacheddevices,waitatleastvesecondsafterthecomputerisshutdowntodisconnect
externaldevices.
Heatandproductventilation
Computers,poweradapters,andmanyaccessoriescangenerateheatwhenturnedonandwhenbatteries
arecharging.Alwaysfollowthesebasicprecautions:
•Donotleaveyourcomputer,poweradapter,oraccessoriesincontactwithyourlaporanypartofyour
bodyforanextendedperiodwhentheproductsarefunctioningorwhenthebatteryischarging.Your
computer,poweradapter,andmanyaccessoriesproducesomeheatduringnormaloperation.Extended
contactwiththebodycouldcausediscomfortor,potentially,askinburn.
•Donotchargethebatteryoroperateyourcomputer,poweradapter,oraccessoriesnearammable
materialsorinexplosiveenvironments.
•Ventilationslots,fans,andheatsinksareprovidedwiththeproductforsafety,comfort,andreliable
operation.Thesefeaturesmightinadvertentlybecomeblockedbyplacingtheproductonabed,sofa,
carpet,orotherexiblesurface.Neverblock,cover,ordisablethesefeatures.
Inspectyourdesktopcomputerfordustaccumulationatleastonceeverythreemonths.Beforeinspecting
yourcomputer,turnoffthepowerandunplugthecomputer'spowercordfromtheelectricaloutlet;then
removeanydustfromventsandperforationsinthebezel.Ifyounoticeexternaldustaccumulation,then
examineandremovedustfromtheinsideofthecomputerincludingheatsinkinletns,powersupplyvents,
andfans.Alwaysturnoffandunplugthecomputerbeforeopeningthecover.Ifpossible,avoidoperating
yourcomputerwithintwofeetofhigh-trafcareas.Ifyoumustoperateyourcomputerinornearahigh-trafc
area,inspectand,ifnecessary,cleanyourcomputermorefrequently.
©CopyrightLenovo2012
vii
Foryoursafetyandtomaintainoptimumcomputerperformance,alwaysfollowthesebasicprecautions
withyourdesktopcomputer:
•Keepthecoverclosedwheneverthecomputerispluggedin.
•Regularlyinspecttheoutsideofthecomputerfordustaccumulation.
•Removedustfromventsandanyperforationsinthebezel.Morefrequentcleaningsmightberequiredfor
computersindustyorhigh-trafcareas.
•Donotrestrictorblockanyventilationopenings.
•Donotstoreoroperateyourcomputerinsidefurniture,asthismightincreasetheriskofoverheating.
•Airowtemperaturesintothecomputershouldnotexceed35°C(95°F).
•Donotinstallairltrationdevices.Theymayinterferewithpropercooling.
Operatingenvironment
Theoptimalenvironmentinwhichtouseyourcomputeris10°C-35°C(50°F-95°F)withhumidityranging
between35%and80%.Ifyourcomputerisstoredortransportedintemperatureslessthan10°C(50°F),
allowthecoldcomputertoriseslowlytoanoptimaloperatingtemperatureof10°C-35°C(50°F-95°F)before
use.Thisprocesscouldtaketwohoursinextremeconditions.Failuretoallowyourcomputertorisetoan
optimaloperatingtemperaturebeforeusecouldresultinirreparabledamagetoyourcomputer.
Ifpossible,placeyourcomputerinawell-ventilatedanddryareawithoutdirectexposuretosunshine.
Keepelectricalappliancessuchasanelectricfan,radio,high-poweredspeakers,airconditioner,and
microwaveovenawayfromyourcomputerbecausethestrongmagneticeldsgeneratedbythese
appliancescandamagethemonitoranddataontheharddiskdrive.
Donotplaceanybeveragesontopoforbesidethecomputerorotherattacheddevices.Ifliquidisspilledon
orinthecomputeroranattacheddevice,ashortcircuitorotherdamagemightoccur.
Donoteatorsmokeoveryourkeyboard.Particlesthatfallintoyourkeyboardcancausedamage.
Modemsafetyinformation
CAUTION:
Toreducetheriskofre,useonlyNo.26AWGorlarger(forexample,No.24AWG)telecommunication
linecordlistedbyUnderwritersLaboratories(UL)orcertiedbytheCanadianStandardsAssociation
(CSA).
Toreducetheriskofre,electricalshock,orinjurywhenusingtelephoneequipment,alwaysfollowbasic
safetyprecautions,suchas:
•Neverinstalltelephonewiringduringalightningstorm.
•Neverinstalltelephonejacksinwetlocationsunlessthejackisspecicallydesignedforwetlocations.
•Nevertouchuninsulatedtelephonewiresorterminalsunlessthetelephonelinehasbeendisconnectedat
thenetworkinterface.
•Usecautionwheninstallingormodifyingtelephonelines.
•Avoidusingatelephone(otherthanacordlesstype)duringanelectricalstorm.Theremaybearemote
riskofelectricshockfromlightning.
•Donotusethetelephonetoreportagasleakinthevicinityoftheleak.
viiiThinkCentreUserGuide
Lasercompliancestatement
CAUTION:
Whenlaserproducts(suchasCD-ROMs,DVDdrives,beropticdevices,ortransmitters)are
installed,notethefollowing:
•Donotremovethecovers.Removingthecoversofthelaserproductcouldresultinexposureto
hazardouslaserradiation.Therearenoserviceablepartsinsidethedevice.
•Useofcontrolsoradjustmentsorperformanceofproceduresotherthanthosespeciedherein
mightresultinhazardousradiationexposure.
DANGER
SomelaserproductscontainanembeddedClass3AorClass3Blaserdiode.Notethefollowing.
Laserradiationwhenopen.Donotstareintothebeam,donotviewdirectlywithoptical
instruments,andavoiddirectexposuretothebeam.
Powersupplystatement
Neverremovethecoveronapowersupplyoranypartthathasthefollowinglabelattached.
Hazardousvoltage,current,andenergylevelsarepresentinsideanycomponentthathasthislabelattached.
Therearenoserviceablepartsinsidethesecomponents.Ifyoususpectaproblemwithoneoftheseparts,
contactaservicetechnician.
Cleaningandmaintenance
Keepyourcomputerandworkspaceclean.Shutdownthecomputerandthendisconnectthepower
cordbeforecleaningthecomputer.Donotsprayanyliquiddetergentdirectlyonthecomputeroruse
anydetergentcontainingammablematerialtocleanthecomputer.Spraythedetergentonasoftcloth
andthenwipethecomputersurfaces.
©CopyrightLenovo2012
ix
xThinkCentreUserGuide
Chapter1.Productoverview
Thischapterprovidesinformationaboutthecomputerfeatures,specications,softwareprogramsprovided
byLenovo,andlocationsofconnectors,components,partsonthesystemboard,andinternaldrives.
Features
Thissectionprovidesinformationaboutthecomputerfeatures.Thefollowinginformationcoversavarietyof
models.Forinformationaboutyourspecicmodel,usetheSetupUtilityprogram.SeeChapter7“Using
theSetupUtilityprogram”onpage77
Microprocessor
Yourcomputercomeswithoneofthefollowingmicroprocessors(internalcachesizevariesbymodeltype):
•Intel
®
Core™i3microprocessor
•IntelCorei5microprocessor
•IntelCorei7microprocessor
•IntelCeleron
•IntelPentium
®
microprocessor
®
microprocessor
Memory
.
Yourcomputersupportsupto2doubledatarate3dualinlinememorymodules(DDR3DIMMs).
Internaldrives
•Opticaldrive:DVD-ROMorDVD-R(availableinsomemodels)
•SerialAdvancedT echnologyAttachment(SATA)harddiskdrive
•SATAsolidstatedrive
Videosubsystem
•IntegratedgraphicsforaVideoGraphicsArray(VGA)connectorandaDigitalVideoInterface(DVI)
connector
•PeripheralComponentInterconnect(PCI)Expressx16graphicscardslotonthesystemboardfora
discretegraphicscard
Audiosubsystem
•Integratedhigh-denition(HD)audio
•Audioline-inconnector,audioline-outconnector,andmicrophoneconnectorontherearpanel
•Microphoneconnectorandheadphoneconnectoronthefrontpanel
•Internalspeaker(availableinsomemodels)
Connectivity
•100/1000MbpsintegratedEthernetcontroller
•PCIEx1Faxmodem(somemodels)
Systemmanagementfeatures
©CopyrightLenovo2012
1
•Abilitytostorepower-onself-test(POST)hardwaretestresults
•DesktopManagementInterface(DMI)
DesktopManagementInterfaceprovidesacommonpathforuserstoaccessinformationaboutall
aspectsofacomputer,includingprocessortype,installationdate,attachedprintersandotherperipherals,
powersources,andmaintenancehistory.
•ErPcompliancemode
Theenergy-relatedproductsdirective(ErP)compliancemodereducestheconsumptionofelectricity
whenyourcomputerisinstandbyoroffmode.Formoreinformation,see“EnablingErPcompliance
mode”onpage80.
•PrebootExecutionEnvironment(PXE)
ThePrebootExecutionEnvironmentisanenvironmenttostartcomputersusinganetworkinterface
independentofdatastoragedevices(suchastheharddiskdrive)orinstalledoperatingsystems.
•SystemManagement(SM)BasicInput/OutputSystem(BIOS)andSMsoftware
TheSMBIOSspecicationdenesdatastructuresandaccessmethodsinaBIOSthatallowsauseror
applicationtostoreandretrieveinformationspecicaboutthecomputerinquestion.
•WakeonLAN
WakeonLANisanEthernetcomputernetworkingstandardthatallowsacomputertobeturnedon
orwokenupbyanetworkmessage.Themessageisusuallysentbyaprogramrunningonanother
computeronthesamelocalareanetwork.
•WakeonRing
WakeonRing,sometimesreferredtoasWakeonModem,isaspecicationthatallowssupported
computersanddevicestoresumefromsleeporhibernationmode.
•WindowsManagementInstrumentation(WMI)
WindowsManagementInstrumentationisasetofextensionstotheWindowsDriverModel.Itprovidesan
operatingsysteminterfacethroughwhichinstrumentedcomponentsprovideinformationandnotication.
Input/Output(I/O)features
•9-pinserialport(onestandardandoneoptional)
•SixUniversalSerialBus(USB)connectors(twoonthefrontpanelandfourontherearpanel)
•OneEthernetconnector
•OneDVIconnector
•OneVGAmonitorconnector
•OnePersonalSystem/2(PS/2)keyboardconnector
•OnePS/2mouseconnector
•Threeaudioconnectorsontherearpanel(audioline-inconnector,audioline-outconnector,and
microphoneconnector)
•Twoaudioconnectorsonthefrontpanel(microphoneconnectorandheadphoneconnector)
Formoreinformation,see“Locatingconnectors,controls,andindicatorsonthefrontofyourcomputer”on
page8
and“Locatingconnectorsontherearofyourcomputer”onpage9.
Expansion
•Twoharddiskdrivebays(onestandardandoneoptional)
•Oneopticaldrivebay
•Oneslimcardreaderdrivebay
•TwoPCIExpressx1cardslots
2ThinkCentreUserGuide
•OnePCIExpressx16graphicscardslot
Powersupply
Yourcomputercomeswithoneofthefollowingpowersupplies:
•280-wattpowersupplywithmanualvoltage-selectionswitch
•280-wattautomaticvoltage-sensingpowersupply
•320-wattautomaticvoltage-sensingpowersupply
Securityfeatures
•ComputraceAgentsoftwareembeddedinrmware
•Coverpresenceswitch(alsocalledintrusionswitch)(availableinsomemodels)
•Abilitytoenableordisableadevice
•AbilitytoenableanddisableUSBconnectorsindividually
•Keyboardwithngerprintreader(shippedwithsomemodels)
•Power-onpassword(POP),administratorpassword,andharddiskpasswordtodeterunauthorized
useofyourcomputer
•Startupsequencecontrol
•Startupwithoutkeyboardormouse
•Supportforanintegratedcablelock(Kensingtonlock)
•Supportforapadlock
Formoreinformation,seeChapter4“Security”onpage27
.
Preinstalledsoftwareprograms
Yourcomputerispreinstalledwithsoftwareprogramstohelpyouworkmoreeasilyandsecurely.Formore
information,see“Softwareoverview”onpage4
.
Preinstalledoperatingsystem
Yourcomputerispreinstalledwithoneofthefollowingoperatingsystems:
•Microsoft
®
Windows
•MicrosoftWindowsVista
Operatingsystem(s),certiedortestedforcompatibility
•Linux
®
®
7
®
1
(variesbymodeltype)
•MicrosoftWindowsXPProfessionalSP3
1.Theoperatingsystem(s)listedherearebeingcertiedortestedforcompatibilityatthetimethispublicationgoesto
press.AdditionaloperatingsystemsmightbeidentiedbyLenovoascompatiblewithyourcomputerfollowingthe
publicationofthismanual.Thislistissubjecttochange.Todetermineifanoperatingsystemhasbeencertiedor
testedforcompatibility,checktheWebsiteoftheoperatingsystemvendor.
Chapter1.Productoverview3
Specications
Thissectionliststhephysicalspecicationsforyourcomputer.
Dimensions
Width:160mm(6.3inches)
Height:388mm(15.28inches)
Depth:422mm(16.61inches)
Weight
Maximumcongurationasshipped:8.16kg(17.99lb)(withoutpackage)
Maximumcongurationasshipped:11.66kg(25.71lb)(withpackage)
Environment
•Airtemperature:
Operating:10°Cto35°C(50°Fto95°F)
Non-operating:-40°Cto60°C(-40°Fto140°F)
Non-operating:-10°Cto60°C(14°Fto140°F)(withoutpackage)
•Humidity:
Operating:20%to80%(non-condensing)
Non-operating:20%to90%(non-condensing)
•Altitude:
Operating:-50to10000ft(-15.2to3048m)
Non-operating:-50to35000ft(-15.2to10668m)
Electricalinput
•Inputvoltage:
–Lowrange:
Minimum:100Vac
Maximum:127Vac
Inputfrequencyrange:50to60Hz
Voltage-selectionswitchsetting:115Vac
–Highrange:
Minimum:200Vac
Maximum:240Vac
Inputfrequencyrange:50to60Hz
Voltage-selectionswitchsetting:230Vac
Softwareoverview
Thecomputercomeswithapreinstalledoperatingsystemandseveralsoftwareprogramsprovidedby
Lenovo.
4ThinkCentreUserGuide
SoftwareprovidedbyLenovo
ThefollowingsoftwareprogramsareprovidedbyLenovotohelpyouimproveproductivityandreducethe
costassociatedwithmaintainingyourcomputer.Softwareprogramsprovidedwithyourcomputermight
varydependingonyourcomputermodeltypeandpreinstalledoperatingsystem.
LenovoThinkVantageT ools
TheLenovoThinkVantage
accesstovarioustoolstohelpyouworkmoreeasilyandsecurely.
Note:TheLenovoThinkVantageToolsprogramisonlyavailableoncomputerswiththeWindows7operating
systemfromLenovo.
ToaccesstheLenovoThinkVantageToolsprogram,clickStart➙AllPrograms➙LenovoThinkVantage
Tools.
ThefollowingtableliststheprogramsthatyoucanaccessfromtheLenovoThinkVantageToolsprogram.To
accessaprogram,double-clickthecorrespondingicon.
Table1.ProgramiconnamesinLenovoThinkVantageT ools
CreateRecoveryMedia
FingerprintSoftware(availableonsomemodels)FingerprintReader(availableonsomemodels)
LenovoSolutionCenterorLenovoThinkVantageToolboxSystemHealthandDiagnostics
ThinkVantagePasswordManagerPasswordVault
ThinkVantagePowerManager
ThinkVantageRescueandRecovery
ThinkVantageSystemUpdate
ViewManagerViewManager
®
Toolsprogramguidesyoutoahostofinformationsourcesandprovideseasy
ProgramnameIconnameinLenovoThinkVantageTools
FactoryRecoveryDisks
PowerControls
®
EnhancedBackupandRestore
UpdateandDrives
LenovoWelcome
TheLenovoWelcomeprogramintroducesyoutosomeinnovativebuilt-infeaturesofLenovoandguidesyou
throughafewimportantsetuptaskstohelpyoumakethemostofyourcomputer.
FingerprintSoftware
Theintegratedngerprintreaderprovidedonsomekeyboardsenablesyoutoenrollyourngerprintand
associateitwithyourpower-onpassword,harddiskpassword,andWindowspassword.Asaresult,
ngerprintauthenticationcanreplacepasswordsandenablesimpleandsecureuseraccess.Angerprint
readerkeyboardisavailablewithselectcomputersorcanbepurchasedforcomputersthatsupportthis
option.
LenovoSolutionCenter
Note:Dependingonthedatewhenyourcomputerwasmanufactured,yourcomputerispreinstalledwith
eithertheLenovoSolutionCenterprogramortheLenovoThinkVantageToolboxprogramfordiagnostic
purposes.ForadditionalinformationabouttheLenovoThinkVantageToolboxprogram,see“Lenovo
ThinkVantageToolbox”onpage111.
TheLenovoSolutionCenterprogramenablesyoutotroubleshootandresolvecomputerproblems.It
combinesdiagnostictests,systeminformationcollection,securitystatus,andsupportinformation,along
withhintsandtipsformaximumsystemperformance.See“LenovoSolutionCenter”onpage111
detailedinformation.
Chapter1.Productoverview5
for
LenovoThinkVantageT oolbox
Note:Dependingonthedatewhenyourcomputerwasmanufactured,yourcomputerispreinstalledwith
eithertheLenovoSolutionCenterprogramortheLenovoThinkVantageToolboxprogramfordiagnostic
purposes.ForadditionalinformationabouttheLenovoSolutionCenterprogram,see“LenovoSolution
Center”onpage111.
TheLenovoThinkVantageToolboxprogramhelpsyoumaintainyourcomputer,improvecomputingsecurity,
diagnosecomputerproblems,getfamiliarwiththeinnovativetechnologiesprovidedbyLenovo,andgetmore
informationaboutyourcomputer.See“LenovoThinkVantageToolbox”onpage111fordetailedinformation.
ProductRecovery
TheProductRecoveryprogramenablesyoutorestorethecontentsoftheharddiskdrivetothefactory
defaultsettings.
ThinkVantageClientSecuritySolution
TheThinkVantageClientSecuritySolutionprogramisavailableonselectLenovocomputers.Ithelpsprotect
yourinformation,includingvitalsecurityinformationlikepasswords,encryptionkeys,andelectronic
credentials,whileguardingagainstunauthorizeduseraccesstodata.
Note:TheThinkVantageClientSecuritySolutionprogramisonlyavailableoncomputerswiththeWindows
VistaoperatingsystemfromLenovo.
ThinkVantagePasswordManager
TheThinkVantagePasswordManagerprogramautomaticallycapturesandllsinauthenticationinformation
forWindowsapplicationsandWebsites.
Notes:
•TheThinkVantagePasswordManagerprogramisonlyavailableoncomputerspreinstalledwiththe
Windows7operatingsystemfromLenovo.
•IfthePasswordVaulticonintheLenovoThinkVantageToolsprogramisdimmed,itindicatesthatyou
needtoinstalltheThinkVantagePasswordManagerprogrammanuallybeforeenablingitsfeatures.To
installtheThinkVantagePasswordManagerprogram,dothefollowing:
1.ClickStart➙AllPrograms➙LenovoThinkVantageT ools,anddouble-clickPasswordVault.
2.Followtheinstructionsonthescreen.
3.Whentheinstallationprocesscompletes,thePasswordVaulticonisactivated.
ThinkVantagePowerManager
TheThinkVantagePowerManagerprogramprovidesconvenient,exible,andcompletepowermanagement
foryourThinkCentre®computer.ByusingtheThinkVantagePowerManagerprogram,youcanadjustyour
powersettingstoachievethebestbalancebetweensystemperformanceandpowersaving.
ThinkVantageRescueandRecovery
TheThinkVantageRescueandRecoveryprogramisaonebuttonrecoveryandrestoresolutionthatincludes
asetofself-recoverytoolstohelpyoudiagnosecomputerproblems,gethelp,andrecoverfromsystem
crashes,evenifyoucannotstarttheWindowsoperatingsystem.
Note:IftheEnhancedBackupandRestoreiconintheLenovoThinkVantageToolsprogramisdimmed,it
indicatesthatyouneedtoinstalltheThinkVantageRescueandRecoveryprogrammanuallybeforeenabling
itsfeatures.T oinstalltheThinkVantageRescueandRecoveryprogram,dothefollowing:
1.ClickStart➙AllPrograms➙LenovoThinkVantageTools,anddouble-clickEnhancedBackup
andRestore.
2.Followtheinstructionsonthescreen.
6ThinkCentreUserGuide
3.Whentheinstallationprocesscompletes,theEnhancedBackupandRestoreiconisactivated.
ThinkVantageSystemUpdate
TheThinkVantageSystemUpdateprogramhelpsyoukeepthesoftwareonyourcomputerup-to-dateby
downloadingandinstallingsoftwarepackages(ThinkVantageapplications,devicedrivers,BIOSupdates,
andotherthirdpartyapplications).
ViewManager
TheViewManagerprogramenablesyoutoautomatewindowlocations.Itenhancesproductivityby
providingtheabilitytomovewindowstohotcornersandquicklysnapthemtoapredeterminedsize.
Itenablesyoutoworkacrossmultiplemonitors.
AdobeReader
TheAdobeReaderprogramisatoolusedtoview,print,andsearchPDFdocuments.
Antivirussoftware
Yourcomputercomeswithantivirussoftwarethatyoucanusetodetectandeliminateviruses.Lenovo
providesafullversionofantivirussoftwareonyourharddiskdrivewithafree30-daysubscription.After30
days,youmustrenewthelicensetocontinuereceivingtheantivirusprogramupdates.
Locations
Thissectionprovidesinformationtohelpyoulocatetheconnectorsonthefrontandrearofyourcomputer,
partsonthesystemboard,andcomponentsandinternaldrivesinyourcomputer.
Chapter1.Productoverview7
Locatingconnectors,controls,andindicatorsonthefrontofyour
computer
Figure1“Frontconnector,control,andindicatorlocations”onpage8showsthelocationsoftheconnectors,
controls,andindicatorsonthefrontofyourcomputer.
Figure1.Frontconnector,control,andindicatorlocations
1Harddiskdriveactivityindicator
2Powerindicator6Headphoneconnector
3Powerswitch7Microphoneconnector
4Opticaldriveeject/closebutton8USBconnector(USBport2)
5USBconnector(USBport1)
8ThinkCentreUserGuide
Locatingconnectorsontherearofyourcomputer
Figure2“Rearconnectorlocations”onpage9showsthelocationsoftheconnectorsontherearofyour
computer.Someconnectorsontherearofyourcomputerarecolor-codedtohelpyoudeterminewhereto
connectthecablesonyourcomputer.
Figure2.Rearconnectorlocations
1Voltage-selectionswitch(availableonsome
10PCIExpressx16graphicscardslot
models)
2Powercordconnector
3PS/2keyboardconnector12Integratedcablelock(Kingstonlock)slot
4DVImonitorconnector13Padlockloop
5VGAmonitorconnector14Optionalserialport(Serialport2)
6USBconnectors(USBports3to6)
7Microphoneconnector
8Audioline-outconnector
9Audioline-inconnector
11PCIExpressx1cardslots(2)
15Ethernetconnector
16Serialport(Serialport1)
17PS/2mouseconnector
ConnectorDescription
Audioline-inconnector
Usedtoreceiveaudiosignalsfromanexternalaudiodevice,suchasastereo
system.Whenyouattachanexternalaudiodevice,acableisconnectedbetween
theaudioline-outconnectorofthedeviceandtheaudioline-inconnectorofthe
computer.
Audioline-outconnector
Usedtosendaudiosignalsfromthecomputertoexternaldevices,suchaspowered
stereospeakers(speakerswithbuilt-inampliers),headphones,multimedia
keyboards,ortheaudioline-inconnectoronastereosystemorotherexternal
recordingdevice.
Chapter1.Productoverview9
ConnectorDescription
DVImonitorconnectorUsedtoattachaDVImonitororotherdevicesthatuseaDVImonitorconnector.
Ethernetconnector
Microphoneconnector
PS/2keyboardconnectorUsedtoattachakeyboardthatusesaPS/2keyboardconnector.
PS/2mouseconnectorUsedtoattachamouse,atrackball,orotherpointingdevicesthatuseaPS/2
Serialport
USBconnectorUsedtoattachadevicethatrequiresaUSBconnector,suchasaUSBkeyboard,a
VGAmonitorconnectorUsedtoattachaVGAmonitororotherdevicesthatuseaVGAmonitorconnector.
UsedtoattachanEthernetcableforalocalareanetwork(LAN).
Note:T ooperatethecomputerwithinFCCClassBlimits,useaCategory5Ethernet
cable.
Usedtoattachamicrophonetoyourcomputerwhenyouwanttorecordsoundorif
youusespeech-recognitionsoftware.
mouseconnector.
Usedtoattachanexternalmodem,aserialprinter,orotherdevicesthatusea
9-pinserialport.
USBmouse,aUSBscanner,oraUSBprinter.IfyouhavemorethaneightUSB
devices,youcanpurchaseaUSBhub,whichyoucanusetoconnectadditional
USBdevices.
10ThinkCentreUserGuide
Locatingcomponents
Figure3“Componentlocations”onpage11showsthelocationsofthevariouscomponentsinyour
computer.Toremovethecomputercover,see“Removingthecomputercover”onpage34.
Figure3.Componentlocations
1Heatsinkandfanassembly
2Microprocessor
3Memorymodules
4Frontbezel
5Opticaldrive
6FrontaudioandUSBassembly
7Harddiskdrive(orsolidstatedrive)
8PCIcard(installedinsomemodels)
9Systemboard
10Rearfanassembly
11Powersupplyassembly
Locatingpartsonthesystemboard
Yourcomputercomeswitheitherofthefollowingtypesofsystemboard.
Chapter1.Productoverview11
Figure4“Systemboardpartlocations”onpage12showsthelocationsofthepartsononetypeofsystem
board.
Figure4.Systemboardpartlocations
14-pinpowerconnector
2Microprocessor
12SATAconnectors(3)
13FrontUSBconnector2(forconnectinganadditionalUSB
device)
3Microprocessorfanconnector
14ClearCMOS(ComplementaryMetalOxideSemiconductor)
/Recoveryjumper
4Memoryslot1(DIMM1)
5Memoryslot2(DIMM2)16Coverpresenceswitchconnector(Intrusionswitch
15Battery
connector)
6Thermalsensorconnector
724-pinpowerconnector18Frontaudioconnector
8Powerfanconnector
9Parallelconnector
10Frontpanelconnector(forconnectingLED
17Serial(COM2)connector
19Internalspeakerconnector
20PCIExpressx1cardslots(2)
21PCIExpressx16graphicscardslot
indicatorsandthepowerswitch)
11FrontUSBconnector1(forconnectingUSB
22Systemfanconnector
connectors1and2onthefrontbezel)
12ThinkCentreUserGuide
Figure5“Systemboardpartlocations”onpage13showsthelocationsofthepartsontheothertype
ofsystemboard.
Figure5.Systemboardpartlocations
14-pinpowerconnector
2Microprocessor
13SATAconnectors(4)
14FrontUSBconnector1(forconnectingUSBconnectors1
and2onthefrontbezel)
3Microprocessorfanconnector
15FrontUSBconnector2(forconnectinganadditionalUSB
device)
4Memoryslot1(DIMM1)16Serial(COM2)connector
5Memoryslot2(DIMM2)
6Thermalsensorconnector18Frontaudioconnector
724-pinpowerconnector
8Battery
9Parallelconnector
10Powerfanconnector
17Internalspeakerconnector
19PCIcardslots(2)
20PCIExpressx1cardslot
21PCIExpressx16graphicscardslot
22Coverpresenceswitchconnector(Intrusionswitch
connector)
11ClearCMOS(ComplementaryMetalOxide
23Systemfanconnector
Semiconductor)/Recoveryjumper
12Frontpanelconnector(forconnectingLED
indicatorsandthepowerswitch)
Chapter1.Productoverview13
Locatinginternaldrives
Internaldrivesaredevicesthatyourcomputerusestoreadandstoredata.Youcanadddrivestoyour
computertoincreasestoragecapacityandenableyourcomputertoreadothertypesofmedia.Internal
drivesareinstalledinbays.Inthismanual,thebaysarereferredtoasbay1,bay2,andsoon.
Wheninstallingorreplacinganinternaldrive,itisimportanttonotethetypeandsizeofthedrivethatyou
caninstallorreplaceineachbayandcorrectlyconnectthecablestothedriveinstalled.Refertothe
appropriatesectionin“Installingorreplacinghardware”onpage33forinstructionsonhowtoinstallor
replaceinternaldrivesforyourcomputer.
Figure6“Drivebaylocations”onpage14
Figure6.Drivebaylocations
showsthelocationsofthedrivebays.
1Bay1-Opticaldrivebay(withanopticaldriveinstalledinsomemodels)
2Bay2-Slimcardreaderdrivebay
3Bay3-PrimarySATAharddiskdrivebay(forinstallinga3.5-inchharddiskdriveora2.5-inchsolidstatedrive)
4Bay4-SecondarySATAharddiskdrivebay(forinstallinga3.5-inchharddiskdriveora2.5-inchsolidstatedrive)
14ThinkCentreUserGuide
Machinetypeandmodellabel
Themachinetypeandmodellabelidentiesyourcomputer.WhenyoucontactLenovoforhelp,themachine
typeandmodelinformationhelpssupporttechnicianstoidentifyyourcomputerandprovidefasterservice.
Thefollowingisasampleofthemachinetypeandmodellabel.
Figure7.Machinetypeandmodellabel
Chapter1.Productoverview15
16ThinkCentreUserGuide
Chapter2.Usingyourcomputer
Thischapterprovidesinformationonusingsomeofthecomputercomponents.
Frequentlyaskedquestions
Thefollowingareafewtipsthatwillhelpyouoptimizetheuseofyourcomputer.
CanIgetmyuserguideinanotherlanguage?
TheuserguideisavailableinvariouslanguagesontheLenovoSupportWebsiteat:
http://www.lenovo.com/ThinkCentreUserGuides
Wherearemyrecoverydiscs?
Lenovoprovidesaprogramthatenablesyoutocreaterecoverydiscs.Fordetailsaboutcreatingrecovery
discs,see“Creatingrecoverymedia”onpage69.
Additionally,incaseofaharddiskfailure,youcanorderProductRecoverydiscsfromtheLenovoCustomer
SupportCenter.ForinformationaboutcontactingtheCustomerSupportCenter,seeChapter11“Getting
information,help,andservice”onpage113.BeforeusingtheProductRecoverydiscs,refertothe
documentationthatcomeswiththediscs.
Attention:AProductRecoverydiscpackagemightcontainmultiplediscs.Makesureyouhaveallofthe
discsreadybeforestartingtherecoveryprocess.Duringtherecoveryprocess,youmightbeprompted
tochangediscs.
WherecanIndhelpabouttheWindowsoperatingsystem?
TheWindowsHelpandSupportinformationsystemprovidesyoudetailedinformationaboutusingthe
Windowsoperatingsystemtohelpyougetthemostofyourcomputer.ToaccesstheWindowsHelpand
Supportinformationsystem,clickStart➙HelpandSupport.
Usingthekeyboard
Dependingonyourmodel,yourcomputercomeswitheitherastandardkeyboardorangerprintreader
keyboard.TheMicrosoftWindowsshortcutkeysareprovidedonbothkeyboardtypes.
Thissectionprovidesinformationaboutthefollowingtopics:
•“UsingWindowsshortcutkeys”onpage17
•“Usingangerprintreader”onpage18
UsingWindowsshortcutkeys
Boththestandardkeyboardandthengerprintreaderkeyboardprovidethreekeysyoucanusewithyour
MicrosoftWindowsoperatingsystem.
•ThetwoStartmenukeysarelocatedbesidetheAltkeyoneithersideofthespacebar.Theyfeaturethe
Windowslogo.Whenyoupresseither,theWindowsStartmenuopens.ThestyleoftheWindowslogo
variesdependingonthekeyboardtype.
•Thecontext-menukeyislocatednexttotheCtrlkeyontherightsideoftheSpacebar.Pressingthe
context-menukeyopensthecontextmenufortheactiveprogram,icon,orobject.
©CopyrightLenovo2012
17
Note:YoucanusethemouseortheUpandDownarrowkeystohighlightmenuselections.Youcanclose
theStartmenuorthecontextmenubyclickingthemouseorpressingEsc.
Usingangerprintreader
Somecomputersmightcomewithakeyboardthathasangerprintreader.Formoreinformationaboutthe
ngerprintreader,see“FingerprintSoftware”onpage5.
ToopentheThinkVantageFingerprintSoftwareprogramandusethengerprintreader,dooneofthe
following:
•OntheWindows7operatingsystem,clickStart➙AllPrograms➙LenovoThinkVantageTools➙
FingerprintReader.
•OntheWindowsVistaoperatingsystem,clickStart➙AllPrograms➙ThinkVantage➙ThinkVantage
FingerprintSoftware.
Followtheinstructionsonthescreen.Foradditionalinformation,refertotheThinkVantageFingerprint
Softwarehelpsystem.
Usingthewheelmouse
Thewheelmousehasthefollowingcontrols:
1PrimarymousebuttonUsethisbuttontoselectorstartaprogramormenuitem.
2Wheel
3Secondarymousebutton
Youcanswitchthefunctionoftheprimaryandsecondarymousebuttonsandchangeotherdefaultbehavior
throughthemousepropertiesfunctionintheWindowsControlPanel.
Usethewheeltocontrolthescrollingactionofthemouse.Thedirectioninwhichyou
rotatethewheelcontrolsthedirectionofthescrollingaction.
Usethisbuttontodisplayamenufortheactiveprogram,icon,orobject.
Adjustingaudio
Soundisanimportantpartofthecomputerexperience.Yourcomputerhasadigitalaudiocontrollerbuilt
intothesystemboard.Somemodelsalsohaveahigh-performanceaudioadapterinstalledinoneofthePCI
cardslots.
Aboutyourcomputeraudio
Ifafactory-installed,high-performanceaudioadapterisinstalledinyourcomputer,thesystem-board
audioconnectorsontherearofthecomputeraretypicallydisabled;usetheconnectorsprovidedonthe
audioadapter.
18ThinkCentreUserGuide