Technical information

Input and Output

PowerBook (FireWire)

Basics

Input and Output

Keyboard and Trackpad

The keyboard and trackpad are the same design as those used in the earlier

PowerBook G3 Series of computers. The PowerBook (FireWire) keyboard

includes a built-in numeric keypad and controls to adjust display

brightness, speaker volume, and external audio port volume.

Several of the keys on the keyboard have more than one mode of operation.

These changes are controlled by the Fn key, the Num Lock key, and the

Function Keys checkbox in the Keyboard control panel.

FireWire Ports and Target Disk Mode

The PowerBook (FireWire) has two external FireWire ports. The ports:

• support serial I/O at up to 400 Mbps

• provide up to 6 watts of power when the computer is turned on

• accept external power input from the bus

• support starting up the system from a mass storage device

• support target disk mode

Target Disk mode is similar to SCSI Disk mode, except it uses a FireWire

connection. When the PowerBook is in Target Disk mode, the PowerBook

operates as a mass storage device. The two primary uses of this feature

are:

• high-speed data transfer between computers or devices

• diagnosis and repair of a corrupted internal hard drive

To put the PowerBook in Target Disk mode, press the T key while starting

up. To take the PowerBook out of Target Disk mode, press the power

button.

USB Ports

The PowerBook (FireWire) has two Universal Serial Bus (USB) ports

that can be used to connect I/O devices such as a USB mouse, printers,