Dell Studio Slim 540s Setup Manual page 17

6 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 — the system board
cannot start initialization. There may be
a problem with either the system board
or power supply.
7 USB 2.0 connectors (2) — Connects
USB devices that are connected
occasionally, such as memory keys, digital
cameras, and MP3 players.
Using Your Studio Slim 540s
Headphone connector — Connects
8
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.
9 Microphone or line-in connector —
Connects to a microphone for voice or to
an audio cable for audio input.
10 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.
15