Advantech DVMB-554E user manual Front Panel Connectors CNX1/CN13, Power LED and Keyboard Lock CN13

If fan is used, this connector supports cooling fans of 500 mA (6W) or less.

2.8 Front Panel Connectors (CNX1/CN13)

There are several external switches to monitor and control the DVMB- 554.

2.8.1 Power LED and Keyboard Lock (CN13)

CN13 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:

Table 2.2: 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

2.8.2 External Speaker (CNX1-17)

It is a 4-pin connector for an external speaker. If there is no external speaker, the DVMB-554E provides an onboard buzzer as an alternative. To enable the buzzer, set pins 3-4 as closed.

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