32
If
fan is used, this
connector
supports
cooling fans of
500 mA (6W)
or
less.
2.8 Front Panel Connectors (CNX1/CN13)
There are several external
switches to monitor and
control the DVMB-
554.

2.8.1

Power LED and

Keyboard Lock (CN13)

CN13 is a
5-pin connector
for the
power
LED.
Refer to
Appendix B for
detailed information on the pin assignments. If a
PS/2 or ATX
power sup- ply
is used,
the system's power LED
status will be
as indicated
below:
Tabl e
2.2: PS/2
or
ATX power supply LED
status
Power mode LED (PS/2 power) LED (ATX power)
System On On On
System Suspend Fast flashes Fast flashes
System Off Off Slow flashes

2.8.2

External Speaker (CNX1-17)

It is a
4-pin connector
for an external
speaker. If there
is no
external speaker,
the DVMB-554E provides
an
onboard buzzer
as an alternative. To enable the
buzzer, set
pins 3-4
as closed.