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AS1021M-UR+ User's Manual
Power LED/Speaker
On JD1, pins 1, 2, and 3 are for the
power LED and pins 4 through 7 are
for the speaker. See the tables on the
right for pin defi nitions.
Note: The speaker connector pins are
for use with an external speaker. If
you wish to use the onboard speaker,
you should close pins 6 and 7 with a
jumper.
ATX PS/2 Keyboard and
PS/2 Mouse Ports
The ATX PS/2 keyboard and the PS/2
mouse ports are located on the I/O
backplane.
The mouse is the top
(green) port. See the table on the
right for pin defi nitions.
Overheat LED
Connect an LED to the JOH1 header
to provide warning of chassis over-
heating. See the table on the right for
pin defi nitions.
Chassis Intrusion
A Chassis Intrusion header is located
at JL1. Attach the appropriate cable
to inform you of a chassis intrusion.
PWR LED Connector
Pin Defi nitions (JD1)
Pin#
Defi nition
1
+Vcc
2
Control
3
Control
Speaker Connector
Pin Defi nitions (JD1)
Pin#
Defi nition
4
Red wire, +5V
5
No connection
6
Buzzer signal
7
Speaker data
PS/2 Keyboard and
Mouse Port Pin
Defi nitions
Pin#
Defi nition
1
Data
2
NC
3
Ground
4
VCC
5
Clock
6
NC
Overheat LED
Pin Defi nitions (JOH1)
Pin#
Defi nition
1
3.3V
2
OH Active
Chassis Intrusion
Pin Defi nitions (JL1)
Pin#
Defi nition
1
Battery voltage
2
Intrusion signal
5-16
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