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Replacement Procedures
Installing memory module
To install a memory module, please confirm that the computer is in boot mode. Then perform
the following procedure.
1. Insert memory module into the connector of the computer slantwise (terminal side
first) and press it to connect firmly.
CAUTION: The power must be turned off when you insert a memory module. Inserting a
memory module with the power on might damage the module or the
computer itself.
Never press hard or bend a memory module.
2. Install the memory slot cover and secure it with screw.
3. When the power of the computer is turned on, the computer checks automatically the
memory size. Confirm that the new memory is detected correctly.
4. If the memory is not detected, check that it is connected correctly.
Socket1
Socket2
Figure 4-9 Insert memory module
Satellite U400/Satellite Pro U400/PORTEGE M800 Maintenance Manual 4-20