Increasing memory capacity is an effective way to make programs run faster. You can increase the amount of memory in your system by installing a double data rate II(DDRII) synchronous dynamic random access memory (DRAM) unbuffered small outline dual inline memory module (SO-DIMM), available as an option, in the memory slot on the bottom of the system. SO-DIMMs with different capacities are available.
If you install a SO-DIMM that is not supported by your system, the system beeps, and will not start.
Attention: Before you start installing a module, touch a metal table or a grounded metal object. This action reduces any static electricity from your body. The static electricity could damage the SO-DIMM. Be careful to avoid the metallic projections in the SO-DIMM socket area.
To install a SO-DIMM, do the following:
Turn off the system; then disconnect the ac adapter and all cables from the system.
If the two SO-DIMMs are already in the memory slots, remove a SO-DIMM to make room for the new one by pressing out on the latches on both edges of the socket at the same time. Be sure to save it for future use.
Find the notch on the contact edge side of the SO-DIMM.
Attention: To avoid damaging the SO-DIMM, do not touch its contact edge.
With the notched end of the SO-DIMM toward the contact edge side of the socket, insert the SO-DIMM into the socket at an angle of about 20 degrees (1); then press it firmly (2).
Pivot the SO-DIMM downward until it snaps into place.
Make sure that the card is firmly fixed in the slot and does not move easily.
Replace the memory cover.
Replace the palm rest. Attention: When you have added or upgraded an SO-DIMM, do not use your computer until you have reinstalled the palm rest.
Turn the system over again, and reconnect the cables.
To make sure that the SO-DIMM is installed correctly, do as follows:
Turn the system on.
While the "To interrupt normal startup, press the blue ThinkVantage button" message is displayed at the lower-left of the screen, press the ThinkVantage button. The ThinkVantage Rescue and Recovery screen opens.
Click Access BIOS. The System Restart Required window is displayed.
Click Yes. The system restarts, and the BIOS Setup Utility screen opens. The "Installed memory" item shows the total amount of memory installed in your system. For example, if your system has 256 MB of memory and you install a 256-MB SO-DIMM in it, the quantity shown in "Installed memory" should be 512 MB.