Hardware Information
7-21
SIMATIC Rack PC 840 Manual
A5E00104826-03
Pin Assignment for ATX Power Supply Connector, X50
Pin No. Designation Description Input / Output
1 3.3V 3.3V power supply Input
2 3.3V 3.3V power supply Input
3 GND Ground -
4 5V 5V power supply Input
5 GND Ground -
6 5V 5V power supply Input
7 GND Ground -
8 PowerGood Input
9 AUX-5V 5V aux. power suppy Input
10 12V 12V power supply Input
11 3.3V 3.3V power supply Input
12 –12V –12V power supply Input
13 GND Ground -
14 PSOFF Output
15 GND Ground -
16 GND Ground -
17 GND Ground
18 –5V –5V power supply Input
19 5V 5V power supply Input
20 5V 5V power supply Input
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