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J21 Reset Connector
A single pole momentary pushbutton switch can be connected to J21 for use as a reset switch.
J22 Speaker Connector
A standard 8 ohm speaker should be connected to J22.
J23 Keylock/Front Panel Connector
J23 can be connected to the front panel power-on LED and keylock switch. The keylock switch disables the system from booting the operating system or entering
Setup until the keylock is unlocked.
J24 IDE Activity LED Connector
J24 can be connected to a front panel LED to reflect the activity of onboard IDE hard disk interface. If an ISA bus hard disk controller is used, J24 should not be
used.
Pin
Use
1
Speaker Data
2
N/C Key
3
GND
4
+5
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