1-26
Chapter 1: Product Introduction
Chapter 1
1.
System power LED (3-pin PLED)
This
3-pin
connector
is
for
the
system
power
LED.
Connect
the
chassis
power
LED
cable
to
this
connector.
The
system
power
LED
lights
up
when
you
turn
on
the
system
power,
and
blinks
when
the
system
is
in
sleep
mode.
2.
Message LED (2-pin MLED)
This
2-pin
connector
is
for
the
message
LED
cable
that
connects
to
the
front
message
LED.
The
message
LED
is
controlled
by
the
BMC
to
indicate
an
abnormal
event
occurrence.
This
connector
may
be
disabled
depending
on
the
model.
3.
System warning speaker (4-pin SPEAKER)
This
4-pin
connector
is
for
the
chassis-mounted
system
warning
speaker.
The
speaker
allows
you
to
hear
system
beeps
and
warnings.
4.
Hard disk drive activity LED (2-pin HDLED)
This
2-pin
connector
is
for
the
HDD
Activity
LED.
Connect
the
HDD
Activity
LED
cable
to
this
connector.
The
HDD
LED
lights
up
or
���
when
data
is
read
from
or
written
to
the
HDD.
5.
ATX power button/soft-off button (2-pin PWRSW)
This
connector
is
for
the
system
power
button.
Pressing
the
power
button
turns
the
system
on
or
puts
the
system
in
sleep
or
soft-off
mode
depending
on
the
operating
system
settings.
Pressing
the
power
switch
for
more
than
four
seconds
while
the
system
is
ON
turns
the
system
OFF.
6.
Reset button (2-pin RESET)
This
2-pin
connector
is
for
the
chassis-mounted
reset
button
for
system
reboot
without
turning
off
the
system
power.
14.
System panel connector (20-1 pin PANEL1)
This
connector
supports
several
chassis-mounted
functions.
