Advantech PCA-6275 ATX Power Control Connectors CN6 and J3, Controlling the soft power switch

2.5ATX Power Control Connectors (CN6 and J3)

2.5.1ATX feature connector (CN6) and soft power switch connector (J3)

The PCA-6275 can support an advanced soft power switch function if an ATX power supply is used. To enable the soft power switch function:

1.Take the specially designed ATX-to-PS/2 power cable out of the PCA-6275's accessory bag.

2.Connect the 3-pin plug of the cable to CN6 (ATX feature connec- tor).

3.Connect the power on/off button to J3. (A momentary type of button should be used.)

Warnings: 1. Make sure that you unplug your power supply when adding or removing expansion cards or other system components. Failure to do so may cause

severe damage to both your CPU card and expansion cards.

2.ATX power supplies may power on if certain motherboard components or connections are touched by metallic objects.

Important: Be sure that the ATX power supply can take at least a 10 mA load on the 5 V standby lead (5VSB). If not, you may have difficulty powering on your system.

2.5.2 Controlling the soft power switch

The soft power switch enables your system to continue running in "system off" mode or "system suspend" mode. For details, refer to Section 3.6. Users can also identify the current power mode by checking the system's power LED. For details, refer to Section 2.8.2.

26PCA-6275 User's Manual