User Guide

1Battery
Useyourcomputerwithbatterypowerwheneveracpowerisunavailable.
Fordetails,refertotheinstructionsin“PowerManager”onpage36
.
2SIMcardslot
IfyourcomputerhasawirelessWANfeature,itmayrequireaSIM(SubscriberIdenticationModule)cardto
establishawirelessWAN(WideAreaNetwork)connections.Dependingonthecountryofdelivery,theSIM
cardmaybealreadyinstalledintheSIMcardslot.
3Dockingconnector
WithaThinkPadPortReplicatorSeries3,ThinkPadMiniDockSeries3,ThinkPadMiniDockPlusSeries
3,orThinkPadUltrabaseSeries3,youcanextendthecomputercapabilitieswhenyouareinyourofce
orathome.
4Memory-upgradeslot
Youcanincreasetheamountofmemoryinyourcomputerbyinstallingamemorymoduleinthememory
bay.Memorymodulesareavailableasoptions.
5Built-instereospeakers
Thestereospeakersarebuiltintoyourcomputer.
Fordetails,refertotheinstructionsin“Volumeandmutebuttons”onpage52
.
ThinkPadX220TabletandX220iT abletbottomview
Figure8.Bottomview
1Battery
2SIMcardslot
3Dockingconnector4Memory-upgradeslot
1Battery
Useyourcomputerwithbatterypowerwheneveracpowerisunavailable.
16UserGuide