IEI Integration ROCKY-3786 v4.0 - Manual (Page 41)

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ROCKY-3786EV CPU Card
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3.2.1 ATX Power Connector
CN Label: CN21
CN Type: 20-pin header (2x10)
CN Location: See Figure 3-2
CN Pinouts: See Table 3-4
The ROCKY-3786EV can work without backplane, while attaching external power to this
ATX power connector. This connector supports the ATX power supply.
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
Table 3-4: ATX Power Connector Pinouts
Figure 3-2: ATX Power Connector Location