Aaeon SBC-400 User Manual page 40

Pin Function
5 Vcc
4 Speaker output
3 Buzzer in
2 Speaker output
1 NC
You can connect an external switch to easily reset your computer.
This switch restarts your computer as if you had turned off the
power then turned it back on. The following table shows the pin
assignments for the JP14.
Pin Function
1 Ground
2 Reset
You can connect a LED indicator across JP15 to indicate when the
CPU is in Turbo mode. Marks on the circuit board indicate LED
polarity (the pin on the left is positive).
Pin Function
1 Turbo
2 Ground
You can connect a switch across the pins of JP17 to change the
CPU speed between Turbo and non-Turbo mode. When you leave
the pins open, the CPU card operates at full speed. When you close
the pins, the card operates at slow speed for compatibility with
older software.
Pin Function
1 - Deturbo
2 Pull low
Low speed High Speed