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15
Using Your Studio Slim 540s
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.
8
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.
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.