User`s manual

23 Chapter 2

2.15 Front Panel Connectors (CN16, 17, 18, 19, 21&29)

There are several external switches to monitor and control the PCA-6188

2.15.1 Power LED (CN16)

CN16 is a 5-pin connector for the power on LED. 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 below:

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

2.15.2 External speaker (CN17)

CN17 is a 4-pin connector for an external speaker. If there is no external

speaker, the PCA-6188 provides an onboard buzzer as an alternative. To

enable the buzzer, set pins 3-4 as closed.

2.15.3 Reset (CN18)

Many computer cases offer the convenience of a reset button. Connect the

wire for the reset button.

CN29

CN18

CN17

CN16

CN19

CN21