Advantech MIC-3042A, User Manual

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MIC-3042 User Manual --- Page 17
Figure 3-4: The connector and jumper locations on the rear side. (MIC-3042B)
3.5.1 ATX Power Connector (ATX1)
This connector accepts one standard ATX power supply.
Note: Do not use ATX power supply and plug-in power module at the same
time.
3.5.2 Power Switch
This connector provides power on/off control of the ATX power supply or the plug-in
power module. If the CompactPCI™
chassis provides a 2-pin power switch cord,
connect this cord to the CN12 connector and users can control the power on/off by
the power switch. Or users can directly short this connector by a jumper and control
the power on/off by the ATX power supply switch.
3.5.3 V I/O Voltage Selection
This jumper is used to select the V I/O voltage. The backplane allows
V I/O to be set to either 5 V or 3.3 V. Since the default is configured for use with 5V
CompactPCI™ boards (blue keyed connectors), once the jumper is set to 3.3 V, the
CompactPCI™ keys must be changed to 3.3 V at the same time (as yellow keyed
connectors).