NOTE: You must remove a memory module to upgrade a memory module or replace a faultymemory module.1. Ensure that you read the Safety instructions.2. Follow the procedure listed in Before working inside your system.3. If installed, remove the memory module or the memory-module blank.WARNING: The memory modules are hot to touch for some time after the system has beenpowered down. Allow time for the memory modules to cool before handling them. Handle thememory modules by the card edges and avoid touching the components or metallic contacts onthe memory module.Steps1. Locate the appropriate memory-module socket.2. Press the ejectors on the memory-module socket outward to allow the memory module to beinserted into the socket.CAUTION: Handle each memory module only on either edges, making sure not to touch themiddle of the memory module.3. Align the edge connector on the memory module with the alignment key on the memory-modulesocket, and insert the memory module in the socket.NOTE: The memory-module socket has an alignment key that allows you to install the memorymodule in the socket in only one orientation.CAUTION: To prevent damage to the memory-module socket during installation, applypressure at both ends of the memory module evenly. Do not apply pressure to the center ofthe memory module.4. Press down on the memory module with your thumbs to lock the memory module into the socket.NOTE: When the memory module is properly seated in the socket, the ejectors on thememory-module socket align with the ejectors on the other sockets that have memorymodules or memory-module blanks installed.5. Repeat step 2 through step 5 of this procedure to install the remaining memory modules.Next steps1. Follow the procedure listed in After working inside your system.2. (Optional) Press to enter the System Setup, and check the System Memory setting.The system should have already changed the value to reflect the newly installed memory.NOTE: If the value is incorrect, one or more of the memory modules may not be installedproperly. Check to ensure that the memory modules are firmly seated in their sockets.3. Run the system memory test in the system diagnostics.Sample memory configurationsThe following tables show sample memory configurations that follow the appropriate memory guidelinesstated in this section.NOTE: 1R, 2R, and 4R in the following tables indicate single-, dual-, and quad-rank DIMMs.53
