Dell OptiPlex 740 User Manual
Page 168
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DC Power Connector P2
DC Power Connectors P3
DC Power Connector P5
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19
GND
Black
20
NC
NC
21
VCC (+5V)
Red
22
VCC (+5V)
Red
23
VCC (+5V)
Red
24
GND
Black
*Use 22-AWG wire instead of 18-AWG wire.
Pin Number
Signal Name
18-AWG Wire
1
GND
Black
2
GND
Black
3
+12 VDC
Yellow
4
+12 VDC
Yellow
Pin Number
Signal Name
24-AWG Wire
1
NC
NC
2
+5 VDC
Red
3
+5 VDC
Red
4
NC
NC
5
GND
Black
6
GND
Black
Pin Number
Signal Name
24-AWG Wire
1
GND
Black
2
+5 VDC
Red
3
NA
NA
4
+3.3 VDC
Orange
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