Toshiba M400 User Guide

User’s Manual

8-9

Optional Devices

Memory expansion

You can install additional memory in the computer’s memory module slot to

increase the amount of RAM. This section describes how to install and

remove a memory module.

If you install a memory module that is not compatible with the computer, a

beep will sound when you turn on the power. If the incompatible module is

installed in slot A, there will be a long beep (1 second) followed by one

short beep (0.5 seconds), while if the incompatible module is in slot B, there

will be a long beep followed by two short beeps. In the event both modules

are incompatible, there will be a long beep followed by one short beep, a

pause, and then a long beep followed by two short beeps. In all instances

you should shut down the computer and remove the incompatible

module(s).

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Place a mat beneath the computer to prevent scratching or damaging

the computer's lid when installing/replacing the memory module. Avoid

mats made of materials that generate static electricity.

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When you install or remove a memory module, ensure that you do not

touch any other internal areas of the computer.

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Use only memory modules approved by TOSHIBA.

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Do not try to install or remove a memory module under the following

conditions as you can damage the computer and/or the module, and

you risk losing data:
a. The computer is turned on.
b. The computer was shut down using either Standby Mode or

Hibernation mode.

c. Wake-up on LAN is enabled.
d. Wake-up on Wireless LAN is enabled.

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Be careful not to let screws or other foreign matter fall into the

computer. It could cause malfunction or electric shock.

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Expansion memory is a precision electronic component that may be

fatally damaged by static electricity. Since the human body can carry

static electricity, it is important that you discharge yourself before

touching or installing any expansion memory modules.To discharge

your body’s static electricity, simply touch any metal close to you with

bare hands.

Use a point size 1 Phillips screwdriver to remove and fasten the screws.

Use of an incorrect screwdriver can damage the screw heads.