You can install devices such as a CD drive, a DVD drive, a CD-RW drive, a second hard drive, a second battery, or a Dell TravelLite™ travel module in the module bay. For more information, see "About the Module Bay" in the Solutions Guide.
This slot allows you to attach a commercially available antitheft device to the computer. Instructions for installing antitheft devices are usually included with the device.
NOTICE: Before you buy an antitheft device, ensure that it will work with the
security cable slot.
Press the volume control keyboard shortcuts to adjust the volume of the integrated speakers. If no sound comes from the speakers, press
and adjust the volume.
HINT: The computer
turns on the fans only
when the computer gets
hot. They may run most of
the time or very seldom,
depending on your use of
the computer. Because the
fans spin at a high rate of
speed, they may make a
noise. This noise is normal
and does not indicate a
problem with the fans or
the computer.
The computer uses an internal fan to create airflow through the vents, which prevents the computer from overheating.
CAUTION: Do not block, push objects into, or allow dust to accumulate in the air vents. Doing so can damage the computer or cause a fire.
NOTICE: To avoid damaging the computer, wait 5 seconds after turning off
the computer before you disconnect an external device.
HINT: The computer
turns on the fans only
when the computer gets
hot. The fans may make a
noise, which is normal and
does not indicate a
problem with the fans or
the computer.
CAUTION: Do not block, push objects into, or allow dust to accumulate in the air vents. Doing so can damage the computer or cause a fire.
Use this connector to attach a parallel device, such as a printer. You can also attach a floppy drive to this connector with the optional parallel connector cable.
HINT: Docking devices
may not be available in all
countries.
Use this connector to attach the optional docking device, also called an advanced port replicator (APR). A docking device, or APR, allows you to easily use external devices with your computer, such as an external keyboard, mouse, or monitor.
See the documentation that came with your docking device for additional information.
HINT: You can use the
integrated keyboard and
an external keyboard at
the same time. When you
attach a keyboard or
numeric keypad, the
integrated numeric
keypad is automatically
disabled.
Use this connector to attach PS/2-compatible devices, such as a mouse, keyboard, or external numeric keypad.
Shut down the computer before attaching or removing a PS/2-compatible device. If the device does not work, install the device drivers from the floppy disk or CD that came with the device, and restart the computer.
On an external keyboard, the
key acts the same way as the
key on the computer's keyboard (if the External Hot Key option is enabled in the system setup program).
This connector attaches an AC adapter to the computer.
The AC adapter converts AC power to the DC power required by the computer. You can connect the AC adapter with your computer turned either on or off.
CAUTION: The AC adapter works with electrical outlets worldwide. However, power connectors and power strips vary among countries. Using an incompatible cable or improperly connecting the cable to the power strip or electrical outlet may cause fire or equipment damage.
NOTICE: When you disconnect the AC adapter from the computer, grasp the
adapter cable connector, not the cable itself, and pull firmly but gently to avoid
damaging the cable.
light turns on when the computer is turned on.
light turns on when the computer reads or writes data.
light turns on steadily or blinks when the computer is in a power management mode. It also blinks to indicate battery charge status.
light operates as follows:
light operates as follows:
light
is flashing.
. 
and adjust the volume.
connector.
connector.
key acts the same way as the 
key on the computer's keyboard (if the External Hot Key option is enabled in the system setup program).
