25 AIMB-780 User Manual
Chapter 2 Connecting Peripherals
2.11 Front Panel Connectors (JFP1, JFP2 & JFP3)
There are several external switches and LEDs to monitor and control the AIMB-780.
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-780 provides an
onboard buzzer as an alternative. To enable the buzzer, set pins 5-7 as closed.
36912
1 2 34 5
25811
14710
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 Slow flashes
1 4 7 10
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