Lenovo B4400 Notebook - Manual (Page 43)

Appendix. CRU (Customer Replaceable Units) instructions
39
To make sure that the DDR3L SDRAM is installed correctly, do as follows:
1 Turn the computer on.
2 Hold F1 during startup. The BIOS setup utility screen opens. The
Installed memory item shows the total amount of memory installed in
your computer.
Note: If only one DDR3L 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).
b
a