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System-error LED
When this amber LED is lit, it indicates that a system error has occurred.
An LED on the system board is also lit to help isolate the error.
CD-ROM drive activity LED
When this LED is lit, it indicates that the CD-ROM drive is in use.
CD-eject button
Press this button to insert a CD into or remove a CD from the CD-ROM
drive.
Line out connector (green)
Use this connector to send audio signals from the computer to external
devices, such as speakers with built-in amplifiers, headphones, multimedia
keyboards, or the audio line-in jack on a stereo system.
Mic connector (pink)
Use this connector to connect a microphone to your computer when you
want to record voices or other sounds on the hard disk. You can also use
this connector (and a microphone) with speech recognition software.
USB connectors
Use these connectors to connect USB devices to your computer, using
redundant Plug and Play technology.
IEEE 1394A (FireWire) connectors
Use these connectors (four-pin on the front and six-pin on the rear) to
connect FireWire devices, such as digital video cameras and external hard
disk drives.
Diskette-eject button
Press this button to release a diskette from the diskette drive.
Diskette drive activity LED
When this LED is lit, it indicates that the diskette drive is in use.
Chapter 1. Introduction 7