Dell OptiPlex GX520 - DC Power Connectors

9. Reconnect the DC power cables to the power supply.
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10. Connect the AC power cable to the AC power connector.
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11. Replace the computer cover.
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DC Power Connectors
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DC Power Connector P1
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Pin Number
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Signal name
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18-AWG Wire
1
+3.3 VDC
Orange
2
+3.3 VDC
Orange
3
GND
Black
4
VCC (+5 V)
Red
5
GND
Black
6
VCC (+5 V)
Red
7
GND
Black
8
PS_PWRGOOD
Gray
9
P5AUX
Purple
10
V_12P0_DIG
Yellow
11
V_12P0_DIG
Yellow
12
+3.3 V
Orange
13
+3.3 V
Orange
14
-12 V*
Blue
15
GND
Black
16
PWR_PS_ON
Green
17
GND
Black
18
GND
Black