Dell Studio Desktop D540 (Late 2008) - Manual (Page 17)

15
Using Your Studio 540
4 Optical drive eject button — Press to
eject a disc from the optical drive.
5 IEEE 1394 connector — Connects
to high‑speed serial multimedia devices
such as digital video cameras.
6 Line-in or microphone connector —
Connects to a microphone for voice or to
an audio cable for audio input.
7 Headphone connector — Connects
to headphones.
NOTE: To connect to a powered
speaker or sound system, use the
audio out or S/PDIF connector on the
back of your computer.
8 Power button and light — Turns the
power on or off when pressed. The light
in the center of this button indicates the
power state:
Blinking white — the computer is in •
sleep state.
Solid white — the computer is in
•
power‑on state.
Blinking amber — there may be a
•
problem with the system board.
Solid amber — there may be a
•
problem with either the system board
or power supply.
9 Hard drive activity light — Turns on
when the computer reads or writes data.
A blinking blue light indicates hard drive
activity.
NOTICE: To avoid loss of data, never
turn off the computer while the hard
drive activity light is blinking.