• PowerBook G4 –12 inch Features

• Peripheral Devices

• System Software

• Machine Identification

• Power Saving

• Target Disk Mode

• Block Diagram and Buses

• Block Diagram

• Main ICs and Buses

• Microprocessor and Cache

• Power PC G4 Microprocessor

• L2 Cache

• Intrepid Memory and I/O Device Controller

• System RAM

• Boot ROM

• Ethernet Controller

• FireWire Controller

• Graphics IC

• ATA-33 Bus

• Ultra ATA-100 Bus

• USB Interface

• Modem Support

• Sound Circuitry

• Power Control IC

• AirPort Extreme Card

• USB Ports

• USB Connector

• USB Technology

• Wake on Connect and Resume

• USB Storage Devices

• USB Controller

• FireWire 400 Port

• FireWire 400 Connector

• FireWire Device Programming

• Ethernet Port

• Internal Modem

• AirPort Extreme Card

• Data Security

• AirPort Hardware

• AirPort Software

• Bluetooth Technology

• Hard Disk Drive

• Hard Disk Dimensions

• Hard Disk Connector

• Signal Assignments

• ATA Signal Descriptions

• DVD-ROM/CD-RW Combo Drive

• DVD-R/CD-RW SuperDrive (Optional)

• Trackpad

• Keyboard

• Keyboard Illustrations

• Changing the Operation of the Keyboard

• Using the Fn Key

• Using the Num Lock Key

• The Embedded Keypad

• Other Control Keys

• Flat-Panel Display

• Dual Display and Mirror Mode

• External Display Port

• Video Display Connector

• Older Monitors Not Supported

• Sound System

• Audio Line Out

• Audio Line In

• Internal Microphone

• Internal Speakers

• The RAM Expansion Slot

• The RAM Expansion Module

• Mechanical Design of the RAM SO-DIMM

• Electrical Design of the RAM SO-DIMM

• DDR SDRAM Devices

• Configuration of RAM SO-DIMMs

• Address Multiplexing

• RAM SO-DIMM Electrical Limits

• Apple Technical Notes

• 3D Graphics

• PowerPC G4 Microprocessor

• Mac OS X

• Velocity Engine (AltiVec)

• Open Firmware

• RAM Expansion Modules

• ATA Devices

• USB Interface

• FireWire 400 Interface

• Target Disk Mode

• Wireless Networks

• Bluetooth

• Typographical Conventions

• Abbreviations