Lenovo B50-80 (English) User Guide - Lenovo B40-xx, B50-xx - Page 43

Appendix A. CRU instructions Replacing the memory You can increase the amount of memory in your computer by installing double data rate three synchronous dynamic random access memory (DDR3 SDRAM)-available as an option-in the memory slot of your computer. DDR3 SDRAM modules 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. • Make sure the computer is turned off and all the cables disconnected from the computer before you replace the memory. • Make sure the computer display is closed to avoid being damaged. • Two memory channels are supported. Both channels should have a memory of the same size and rank. You should install the ram in Slot 1 if there is only ONE ram module. (B40-30/N40-30/B50-30) To install a DDR3 SDRAM module, 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 DDR3 SDRAM. Do not touch the contact edge of the DDR3 SDRAM module. 2 Remove the battery pack. For details, see "Replacing the battery pack" on page 33. 3 Remove the screws a , and then remove the bottom slot cover b . 1 1 2 37