Technical information

Features of Your PowerBook 19
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Brightness controls
Increase or decrease the brightness of your PowerBook display using these keys on your
PowerBook keyboard.
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Volume controls
Increase or decrease the volume of the sound coming from the built-in speakers and sound
output port.
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Mute control
Tu r ns the sound from the PowerBook built-in speakers and sound output port off and on.
Expansion bay with a DVD-ROM drive module inserted
Dual-function expansion bay that accepts removable modules or a PowerBook battery. Use
the DVD-ROM drive to install and run programs, play music CDs, play DVD-Video discs, or
reinstall system software. To eject an expansion bay module, pull the expansion bay release
lever toward you.
Function (Fn) key
Hold down this key to activate the function keys (F1–F12).
Keyboard release tabs
When you need to install memory, install an AirPort Card, or remove the hard disk, pull
these tabs down to release the PowerBook keyboard.
Microphone
Record sounds directly on your PowerBook hard disk with this built-in microphone.
Num Lock key
Activates the numeric keypad embedded in the PowerBook keyboard.
®
Power button
Tu r ns your PowerBook on and off or puts it to sleep.
Ç
Security slot
Protect your PowerBook by connecting a security cable.
Sleep indicator
A pulsating green light indicates when the PowerBook is in sleep.
Trackpad
Moves the pointer on the PowerBook display. With the Trackpad control panel, you can set
the trackpad to double-click and select items directly instead of using the trackpad button.
Keyboard lock
Protect the internal components of your PowerBook (such as memory and the hard disk
drive) by preventing the keyboard from being easily removed.