Lenovo THINKCENTRE 2491 User Manual Page 82

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2.Openthecomputercover.See“Openingthecomputercoveronpage72.
3.Locatethesystemboardanddisconnectallcablesconnectedtothesystemboard.See“Locating
partsonthesystemboard”onpage71.
4.Pressinwardonthetwosidetabsandthenpivotthesystemboardtoreleaseitfromthechassis.
Figure9.Releasingthesystemboard
5.Placethesystemboardonacleanandatsurface.
6.LocatethePCIcardslot.See“Locatingpartsonthesystemboard”onpage71.
7.RotatethePCIcardretainertotheopenposition.
8.DependingonwhetheryouareinstallingorreplacingaPCIcard,dooneofthefollowing:
IfyouareinstallingaPCIcard,removethemetalslotcover.
IfyouarereplacinganoldPCIcard,grasptheoldcardthatiscurrentlyinstalledandgentlypullit
outoftheslot.
Figure10.RemovingthePCIcard
9.RemovethenewPCIcardfromitsstatic-protectivepackage.
76ThinkCentreHardwareMaintenanceManual
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