19 AIMB-785 User Manual
Chapter 2 Connecting Peripherals
2.9.1 Power LED and Keyboard Lock (JFP3)
JFP3 is a 5-pin connector for the power LED and keyboard lock. Refer to Appendix B
for detailed information 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.
2.9.2 External Speaker (JFP2 pins 1, 4, 7 & 10)
JFP2 is a 8-pin connector for an external speaker. The AIMB-785 provides an
onboard buzzer as an alternative. To enable the buzzer, set pins 7-10 as closed.
2.9.3 HDD LED Connector (JFP2 pins 2 & 5)
You can connect an LED to connector JFP2 to indicate when the HDD is active.
2.9.4 SNMP SM_Bus connector (JFP2 pins 8 & 11)
AIMB-785 supports Advantech SNMP-1000/SAB-2000 module for providing a plat-
form independent system management. When installing SNMP-1000/SAB-2000
module on AIMB-785, please connect it to pins 8 and 11 of JFP2.
2.9.5 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.
2.9.6 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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