1Battery
Useyourcomputerwithbatterypowerwheneveracpowerisunavailable.
Fordetails,refertotheinstructionsin“PowerManager”onpage36.
2SIMcar dslot
IfyourcomputerhasawirelessWANfeature,itmayrequireaSIM(SubscriberIdenticationModule)cardto
establishawirelessWAN(WideAreaNetwork)connections.Dependingonthecountryofdelivery,theSIM
cardmaybealreadyinstalledintheSIMcardslot.
3Dockingconnector
WithaThinkPadX220Ultrabase,youcanextendthecomputercapabilitieswhenyouareinyourofce
orathome.
4Memory-upgradeslot
Youcanincreasetheamountofmemoryinyourcomputerbyinstallingamemorymoduleinthememory
bay.Memorymodulesareavailableasoptions.
Rearview
Thissectionintroducesrearviewofyourcomputer .

ThinkPadX220andX220ir earview

Figure9.ThinkPadX220andX220irearview
1Powerjack2Fanlouvers(rear)
1Powerjack
Theacpoweradaptercableconnectstothecomputerpowerjacktoprovidepowertothecomputerand
chargethebattery .
2Fanlouvers(rear)
Theinternalfanandlouversenableairtocirculateinthecomputerandcoolthecentralprocessor.
Chapter1.ProductOverview17