25 Chapter 2
2.12.1 Power LED and Keyboard Lock (CN16)
CN16 is a 5-pin connector for the power LED. Refer to Appendix B for
detailed information on the pin assignments. If a PS/2 or ATX power sup-
ply is used, the system's power LED status will be as indicated below:
2.12.2 External Speaker (CN17)
CN17 is a 4-pin connector for an external speaker. If there is no external
speaker, the AIMB-760 provides an onboard buzzer as an alternative. To
enable the buzzer, set pins 3-4 as closed.
2.12.3 Reset Connector (CN18)
Many computer cases offer the convenience of a reset button. Connect the
wire from the reset button
2.12.4 HDD LED Connector (CN19)
You can connect an LED to connector CN19 to indicate when the HDD is
active.
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
1