cd-eject button
press this button to release a cd from the cd-rom drive.
cd-rom drive activity led
when this led is lit, it indicates that the cd-rom drive is in use.
diskette drive activity led
when this led is lit, it indicates that the diskette drive is in use.
diskette-eject button
press this button to release a diskette from the diskette drive.
ethernet link status led
this led is on the ethernet connector on the back of the computer. when this led is lit, it indicates that there is an active connection on the ethernet port.
ethernet transmit/receive activity led
when this led is lit, it indicates that there is activity between the computer and the network. there are two ethernet transmit/receive activity leds: one on the front bezel and the other on the ethernet connector on the rear of the computer.
hard disk drive activity led
when this led is flashing, it indicates that a hard disk drive is in use.
ieee 1394 (firewire) connector (some models)
this connector is used to connect ieee 1394 devices to your computer.
line-out connector (green)
this connector sends stereo audio signals from the computer to external devices, such as speakers with built-in amplifiers, headphones, or the audio line-in jack on a stereo system.
microphone connector (pink)
this connector is used to connect a microphone to record voice or other sounds on the hard disk. you can also use this connector (and a microphone) with speech recognition software.
power-control button
press this button to turn the computer on and off manually. you can install a circular disk, called the power-control button shield, over the power-control button to prevent accidental manual power-off. this disk is provided with your computer.
power-on led
when this led is lit and does not flash, it indicates that the computer is turned on. when this led is flashing, it indicates that the computer is off and still connected to an ac power source (standby mode).
system error led
when this led is lit, it indicates that a system error has occurred. an led on the system board might also be lit to help isolate the error. see “system-board error leds” on page 85 and chapter 5, “solving problems” on page 61 for additional information.
usb ports
use these automatically configures ports to connect universal serial bus
(usb) v2.0 devices to your computer, using plug and play technology.