Toshiba Satellite U500 Maintenance Manual page 166

Installing the Memory module
To install the memory module, make sure that the computer is in boot mode and powered off,
follow the steps below and refer to Figures 4-7 to 4-8.
CAUTION: When installing only one memory module, be sure to insert it into slot A.
Otherwise, the computer or the memory may not work properly
operly.
Do not touch the connectors on the memory module or on the computer.
Dust and stains on the connectors may cause memory access problems.
1. Insert the memory module into the connector slantwise 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 the memory module.
2. Seat the HDD cover and secure it with the screw (with an e-ring).
3. When the power is turned on, the computer automatically checks the memory size.
Confirm that the new memory is detected correctly.
4. If the memory is not detected, check that it is connected correctly.
4-24 Satellite/Satellite Pro U500/U500D, PORTEGE M900/M900D
4 Replacement Procedures
Maintenance Manual