Lenovo B550 Notebook - Manual (Page 39)

Chapter 6. Upgrading and replacing devices
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To make sure that the SO-DIMM is installed correctly, do as follows:
1
Turn the computer on.
2
Hold F2 during startup. The BIOS Setup Utility screen opens. The Total Memory item
shows the total amount of memory installed in your computer.
Removing the optical drive - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
To remove the optical drive, do the following:
1
Remove the Memory/CPU (Central processing unit)/Mini PCI Express Card slot
compartment cover.
2
Remove the screw shown in the illustration .
3
Gently pull the optical drive out .
Note: If only one DIMM 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). a b
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