The computer has two memory slots, DIMM A and DIMM B, both located on the bottom of the computer under the memory module/Mini PCI cover. DIMM A holds the basic memory module as configured from the factory. If you did not order additional memory, DIMM B will be empty. Generally, if you are adding memory, you will install a memory module in DIMM B. If you are upgrading memory, you may need to install memory in DIMM A and B depending on the extent of the upgrade.
1Follow the procedures in “Before You Begin.”
2Ground yourself by touching one of the metal connectors on the back of the computer.
NOTE: If you leave the area, ground yourself again when you return to the computer.
3Turn the computer over, loosen the captive screws on the memory module/Mini PCI cover, and then remove the cover.
1 
1captive screws (3)
NOTICE: To prevent damage to the memory module connector, do not use tools to spread the
4If you are replacing a memory module, remove the existing module:
a Use your fingertips to carefully spread apart the securing clips on each end of the memory module connector until the module pops up.
b Remove the module from the connector.
Adding and Replacing Parts
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