User Guide

Fordetails,refertotheinstructionsin“PowerManager”onpage36.
2SIMcardslot
IfyourcomputerhasawirelessWANfeature,itmayrequireaSIM(SubscriberIdenticationModule)cardto
establishawirelessWAN(WideAreaNetwork)connections.Dependingonthecountryofdelivery,theSIM
cardmaybealreadyinstalledintheSIMcardslot.
3Dockingconnector
WithaThinkPadUltrabaseSeries3,youcanextendthecomputercapabilitieswhenyouareinyourofce
orathome.
4Memory-upgradeslot
Youcanincreasetheamountofmemoryinyourcomputerbyinstallingamemorymoduleinthememory
bay.Memorymodulesareavailableasoptions.
Rearview
Thissectionintroducesrearviewofyourcomputer.
ThinkPadX220andX220irearview
Figure9.ThinkPadX220andX220irearview
1Powerjack
2Fanlouvers(rear)
1Powerjack
Theacpoweradaptercableconnectstothecomputerpowerjacktoprovidepowertothecomputerand
chargethebattery.
2Fanlouvers(rear)
Theinternalfanandlouversenableairtocirculateinthecomputerandcoolthecentralprocessor.
Note:Toavoidimpedingairow,donotplaceanyobstacleinfrontofthefan.
Chapter1.ProductOverview17