Atx Power Control Connector (Cn2, J4); Atx Feature Connector (Cn2) And Power Button (J4); Figure 2-4: Wiring For Atx Power Switch Function - Advantech PCM-9574 User Manual

2.14 ATX power control connector (CN2, J4)

2.14.1 ATX feature connector (CN2) and power
button (J4)
The PCM-9574 can support an advanced power button if an ATX
power supply is used. To enable the power button:
1. Take the specially designed ATX-to-PS/2 power cable
(PCM-9574 optional item).
2. Connect the 3-pin plug of the cable to CN2 (ATX feature
connector).
3. Connect the power on/off button to J4. (A momentary type of
button should be used.)
Important: Be sure that the ATX power supply can take at least

Figure 2-4: Wiring for ATX power switch function

a 10 mA load on the 5 V standby lead (5 VSB). If not,
you may have difficulty powering on your system.
Chapter 2 Installation 21