Lenovo IdeaPad U455 Lenovo IdeaPad U455 User Guide V1.0 - Page 73
Replacing memory
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Chapter 6. Upgrading and replacing devices Replacing memory You can increase the amount of memory in your computer by installing a double data rate (DDR2) small outline dual inline memory module (SDRAM)-available as an option-in the memory slot of your computer. 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 an 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 SDRAM. Do not touch the contact edge of the SDRAM. 2 Turn off the computer. Disconnect the AC adapter and all cables from the computer. 3 Close the computer display, and turn the computer over. 4 Remove the battery. 59