AIMB-784 User Manual 20
2.11.1 Power LED and Keyboard Lock (JFP3)
JFP3 is a 5-pin connector for the power LED. Refer to Appendix B for detailed infor-
mation on the pin assignments. If a PS/2 or ATX power supply is used, the system’s
power LED status will be as indicated as follows.
2.11.2 External Speaker (JFP2 pins 1, 4, 7 & 10)
JFP2 is a 8-pin connector for an external speaker. The AIMB-784 provides an
onboard buzzer as an alternative. To enable the buzzer, set pins 7-10 as closed.
2.11.3 HDD LED Connector (JFP2 pins 2 & 5)
You can connect an LED to connector JFP2 to indicate when the HDD is active.
2.11.4 SNMP SM_Bus connector (JFP2 pins 8 & 11)
AIMB-784 supports Advantech SNMP-1000/SAB-2000 module for providing a plat-
form independent system management. When installing SNMP-1000/SAB-2000
module on AIMB-784, please connect it to pins 8 and 11 of JFP2.
2.11.5 ATX Soft Power Switch (JFP1 pins 3 & 6)
If your computer case is equipped with an ATX power supply, you should connect the
power on/off button on your computer case to pins 3 and 6 of JFP1. This connection
enables you to turn your computer on and off.
2.11.6 Reset Connector (JFP1 pins 9 & 12)
Many computer cases offer the convenience of a reset button.
Table 2.1: PS/2 or ATX power supply LED status
Power mode LED (PS/2 power) LED (ATX power)
System On On On
System Suspend Fast flashes Fast flashes
System Off Off Off
System Off in deep sleep Off Off
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