Lenovo B560 Notebook - Manual (Page 42)

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Appendix A. CRU instructions
To make sure that the DDR3 SDRAM is installed correctly, do as follows:
1
Turn the computer on.
2
Hold F2 during startup. The BIOS setup utility screen opens. The System Memory item
shows the total amount of memory installed in your computer.
Note: If only one DDR3 SDRAM is used on the computer you are servicing, the card must be installed in
SLOT-0 (
: lower slot), but not in SLOT-1 ( : upper slot).