Front Panel Connector (Cn25, Cn26, Cn27); Hard Disk Drive Led (Cn25); Reset Switch (Cn26); Atx Power Button (Cn27) - Advantech PCA-6751 Series User Manual

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2.22 Front panel connector

(CN25, CN26, CN27)

Next, you may want to install external switches to monitor and control

the PCA-6751 Series. These features are optional - install them only if

you need them. The front panel connector provides connections for

both a speaker and a hard disk access indicator, and it also provides an

input switch for resetting the card and the ATX system power switch.

You can connect an LED to connector CN25 to indicate when the

HDD is active. Marks on the circuit board indicate LED polarity.

If you install a reset switch, it should be a single pole switch rated at

10 mA, 5 V. Momentarily pressing the switch will activate a reset.

For reset switch pin assignments, please see Appendix C.

The PCA-6751 Series provides an ATX power input connector. When

connected with the ATX power switch, the ATX power switch

connector (CN27) enables power On/Off from the chassis.

PCA-6751 Series User's Manual

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