2 8Instal l opt ional memor y cardsw w w . d e l l . c o m / s u p p l i e s|s u p p o r t . d e l l . c o mRemoving the system board shieldUse a No. 2 Phillips screwdriver to remove the system board shield.1Remove screw #1 and set it aside.2Loosen screws #2, #3, and #4, but do not remove them.2134