Lenovo G400s User Guide - Notebooks - Page 41
Replacing memory, Close the computer display, and turn the computer over.
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Appendix. CRU instructions Replacing memory You can increase the amount of memory in your computer by installing a double-data-rate three low voltage synchronous dynamic random access memory (DDR3L SDRAM)-available as an option-in the memory slot of your computer. DDR3L SDRAMs are available in various capacities. Note: Use only the memory types supported by your computer. If you incorrectly install optional memory, or install an unsupported memory type, a warning beep will sound when you try to start the computer. To install a DDR3L SDRAM, do the following: 1 Touch a metal table or a grounded metal object to reduce any static electricity in your body, which could damage the DDR3L SDRAM. Do not touch the contact edge of the DDR3L SDRAM. 2 Turn off the computer. Disconnect the AC power adapter and all cables from the computer. 3 Close the computer display, and turn the computer over. 4 Remove the battery again. 5 Remove the Hard disk drive/Memory/Central processing unit/wireless LAN card slot compartment cover. a.Loosen the screws that secure the compartment cover a. b.Remove the compartment cover b . a a b a 37