Lenovo ThinkPad Edge E531 - Replacing a Wireless WAN Card; Loosen the Screws, and then Remove the Cover

ReplacingawirelessWANcard
Beforeyoustart,printtheseinstructions.
PrerequisitesforreplacingorinstallingthewirelessWANcard
DANGER
Duringelectricalstorms,donotconnectthecabletoordisconnectitfromthetelephoneoutlet
onthewall.
DANGER
Electriccurrentfrompower,telephone,andcommunicationcablesishazardous.Toavoidshock
hazard,disconnectthecablesbeforeopeningthecoverofthisslot.
Attention:BeforeyoustartinstallingawirelessWANcard,touchametaltableoragroundedmetalobject.
Thisactionreducesanystaticelectricityfromyourbody.Thestaticelectricitycoulddamagethecard.
IfyourcomputerisequippedwithawirelessWANcard,replacethecardbydoingthefollowing:
1.Turnoffthecomputer;thendisconnecttheacpoweradapterandallcablesfromthecomputer.Wait
threetoveminutestoletthecomputercool.
2.Closethecomputerdisplay,andturnthecomputerover.
3.Removethebattery.See“Replacingthebattery”onpage67.
4.Loosenthescrew1,andthenremovethecover2.
92UserGuide