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ATX PS/2 Keyboard and PS/2
Mouse Ports
The ATX PS/2 keyboard and PS/2
mouse are located next to the
Back Panel USB Ports 0/1 on the
motherboard. See the table at right for
pin defi nitions.
Power LED/Speaker
On the JD1 header, pins 1~3 are used
for power LED indication, and pins 4-7
are for the speaker. See the tables
on the right for pin defi nitions. If you
wish to use the onboard speaker, you
should close pins 6~7 with a jumper.
Connect a cable to pins 4~7 of JD1 to
use an external speaker.
Chassis Intrusion
A Chassis Intrusion header is located
at JL1. Attach the appropriate cable to
inform you of a chassis intrusion.
Video Connector
A Video (VGA) connector is located
below the COM Port on the IO
backplane. This connector is used to
provide video and CRT display.
PS/2 Keyboard/Mouse Pin
PS2 Keyboard
Pin# Defi nition
1
KB Data
2
No
Connection
3
Ground
4
Mouse/KB
VCC (+5V)
5
KB Clock
6
No
Connection
VCC: with 1.5A PTC (current limit)
PWR LED Connector
Pin Defi nitions
Pin Setting
Pin 1
Pin2
Pin3
Speaker Connector
Pin Defi nitions
Pin Setting
Pins 4~7
Pins 6~7
Chassis Intrusion
Pin Defi nitions
Pin# Defi nition
1
2
2-13
Chapter 2: Installation
Defi nitions
PS2 Mouse
Pin# Defi nition
1
Mouse Data
2
No
Connection
3
Ground
4
Mouse/KB
VCC (+5V)
5
Mouse Clock
6
No
Connection
Defi nition
Anode (+)
Cathode (-)
NA
Defi nition
External Speaker
Internal Speaker
(JL1)
Battery voltage
Intrusion signal
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