Lenovo ThinkPad E550 - Replacing a Wireless LAN Card

ReplacingawirelessLANcard
Beforeyoustart,printtheseinstructionsandread“Importantsafetyinformation”onpagevi.
DANGER
Duringelectricalstorms,donotperformanyreplacementanddonotconnectordisconnectthe
telephonecablefromthetelephoneoutletonthewall.
DANGER
Electriccurrentfrompower,telephone,andcommunicationcablesishazardous.T oavoidshock
hazard,disconnectthecablesbeforeopeningthecoverofthisslot.
Attention:BeforeyoustartinstallingawirelessLANcard,touchametaltableoragroundedmetalobject.
Thisactionreducesanystaticelectricityfromyourbody.Thestaticelectricitycoulddamagethecard.
ToreplacethewirelessLANcard,dothefollowing:
1.Turnoffthecomputer;thendisconnecttheacpoweradapterandallcablesfromthecomputer.Wait
threetofiveminutestoletthecomputercool.
2.Closethecomputerdisplayandturnthecomputerover.
3.Removethebattery.See“Replacingthebattery”onpage113.
4.Loosenthescrews1andthenremovethecover2.
126UserGuide