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3.14 ATX Power Connector
The ROCKY-3705EV/EVG can work without backplane, while
attaching external power to this ATX power connector.
•
CN21: ATX Power Supply Connector
•
CN21 is a 20-pin ATX Power Supply Connector. Please
refer to the following table for the pin assignments.
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
11 3.3V 1 3.3V
12 -12V 2 3.3V
13 GND 3 GND
14 PSON# 4 +5V
15 GND 5 GND
16 GND 6 +5V
17 GND 7 GND
18 -5V 8
Power
good
19 +5V 9 +5VSB
20 +5V 10 +12V