Lenovo X200 Service Guide - Page 54
To install an SO-DIMM, Turn off the computer
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Increasing memory capacity is an effective way to make programs run faster. You can increase the amount of memory in your computer by installing a double data rate (DDR) 3 synchronous dynamic random access memory (DRAM) unbuffered small outline dual inline memory module (SO-DIMM), available as an option, in the memory slot of your computer. SO-DIMMs with different capacities are available. Note: Use only the memory types supported by your computer. If you incorrectly install the optional memory or install an unsupported memory type, a warning beep will sound when you try to start the computer. To install an SO-DIMM 1. Touch a metal table or a grounded metal object. This action reduces any static electricity in your body, which could damage the SO-DIMM. Do not touch the contact edge of the SO-DIMM. 2. Turn off the computer; then disconnect the AC adapter and all cables from the computer. 3. Close the computer display, and turn the computer over. 4. Remove the battery. 5. Loosen the screws 1 on the memory slot cover; then remove the cover 2. 1 1 2 46 ThinkPad® X200 Tablet Service and Troubleshooting Guide