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Hardware Configuration
BISD3-QM77
User’s Manual
29
2
J13 is utilized for system indicators to provide light indication of the computer
activities and switches to change the computer status. It provides interfaces for the
following functions.
ATX Power ON Switch (Pins 1 and 2)
The 2 pins makes an “ATX Power Supply On/Off Switch” for the system that
connects to the power switch on the case. When pressed, the power switch
will force the system to power on. When pressed again, it will power off the
system.
Hard Disk Drive LED Connector (Pins 3 and 4)
This connector connects to the hard drive activity LED on control panel. This
LED will flash when the HDD is being accessed.
Reset Switch (Pins 5 and 6)
The reset switch allows you to reset the system without turning the main
power switch off and then on again. Orientation is not required when making
a connection to this header.
Power LED: Pins 7 and 8
This connector connects to the system power LED on control panel. This
LED will light when the system turns on.
2.5.17 Digital I/O (J14)
2
10
1
9
Pin
Assigment
Pin
Assigment
1
Ground
6
Out0
2
5V
7
IN3
3
Out3
8
IN1
4
Out1
9
IN2
5
Out2
10
IN0
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