Lenovo ThinkPad T420 User Manual

Table10.Startupmenuitems(continued)
OptionKeysdisplay(ThinkVantage
buttonmessage)
•Disabled
•Enabled
Ifyouselect“Disabled”,the“To
interruptnormalstartup,pressthe
blueThinkVantagebutton.”message
isnotdisplayedduringPOST.
BootDeviceListF12Option
•Disabled
•Enabled
Ifyouselect“Enabled”,theF12key
isrecognizedandtheBootmenuis
displayed.
BootOrderLock
•Disabled
•Enabled
Ifyouselect“Enabled”,theBoot
PriorityOrderislockedforyourfuture
use.
UpdatingyoursystemUEFIBIOS
TheUniedExtensibleFirmwareInterface(UEFI)BIOSisapartofthesystemprogramsthatmakeupthe
basiclayerofsoftwarebuiltintoyourcomputer.UEFIBIOStranslatestheinstructionsfromothersoftware
layers.
Yourcomputersystemboardhasamodulecalledelectricallyerasableprogrammableread-onlymemory
(EEPROM,alsoreferredtoasashmemory).YoucanupdateUEFIBIOSandtheConguration/ThinkPad
SetupProgrambystartingyourcomputerwithaashupdateopticaldiscor.ashupdatetoolapplication
runningontheWindwosenvironment.
Insomeinstanceswhenyouaddsoftware,hardware,oradevicedriver,youmaybeinformedthatyouneed
toupdateyourUEFIBIOSinorderforthenewadditiontoworkproperly.
ToupdateyourUEFIBIOS,goto:
http://www.lenovo.com/support/site.wss/document.do?sitestyle=lenovo&lndocid=tpad-matrix,andfollow
theinstructionsonthescreen.
Usingsystemmanagement
Thissectionisintendedprimarilyfornetworkadministrators.
Yourcomputerisdesignedformanageability,sothatyoucanredirectmoreofyourresourcestobetter
meetyourbusinessobjectives.
Thismanageability,or“TotalCostofOwnership”(TCO),enablesyoutoremotelypoweronyourcomputer,
formattheharddiskdrive,installthesoftwareofyourchoice(forexample,WindowsXPwithuserand
system-managementapplications),andhavethecomputerstartupandfunctioninthesamewayasan
ordinarydesktopPC.
Oncethecomputerisconguredandoperational,youcanmanageitbyuseofsoftwareandmanageability
featuresalreadyintegratedintotheclientsystemandthenetwork.
Systemmanagement
CheckthefollowingtopicstolearnmoreaboutfeaturesofSystemManagement:
•DesktopManagementInterface
•PrebooteXecutionEnvironment
•WakeonLAN
•Resumeonincomingcall
Chapter8.Advancedconguration193

Lenovo ThinkPad T420 Specifications

General

Processor cache	3 MB
Processor front side bus	1333 MHz
Number of processors supported	1
Display diagonal	14 \
Display resolution	1366 x 768 pixels
AC adapter power	65 W
Indication light	Yes
Infrared data port	No
Number of speakers	2
Maximum internal memory	8 GB
Speaker power	1 W
Battery voltage	10.8 V
HDD speed	7200 RPM
HDD capacity	320 GB
HDD interface	SATA

Weight and Dimensions

Depth	337 mm
Height	21.2 mm
Height (imperial)	0.83 \