Front Panel Connector (Cn4) - Advantech PCM-4862 Manual

Next you may want to install external switches to monitor and
control the PCM-4862. These features are completely optional —
install them only if you need them. The front panel connector (CN4)
is an 8-pin male, dual in-line header and provides connections for a
speaker, hard disk access indicator and an input switch for reset-
ting the card.
The PCM-4862 can drive an 8 Ω speaker at 0.5 watts. Ensure that
alternatives to this specification do not overload the card.
The front panel LED indicator for hard disk access is an active low
signal (24 mA sink rate).
If you install a reset switch, it should be a open single pole switch.
Momentarily pressing the switch will activate a reset. The switch
should be rated for 10 mA, 5 V.
If you need to make your own cable, you can find the pin assign-
ments for the card's connector in Appendix C.
Supplies secondary power to devices that require -5 V and -12 V.
Supplies main power to the PCM-4862 (+5 V) and devices that
require +12 V.
Provides power supply to optional CPU cooling fan. Only present
22 PCM-4862 User's Manual