Dell Dimension E521 - Manual (Page 62)

DC Power Connector P2
DC Power Connectors P3, P5, P8, and P9
DC Power Connector P7
7 GND Black
8 PS_PWRGOOD Gray
9 P5AUX Purple
10 V_12P0_DIG White
11 V_12P0_DIG White
12 +3.3 VDC Orange
13 +3.3VDC/SE* Orange
14 -12 VDC Blue
15 GND Black
16 PWR_PS_ON Green
17 GND Black
18 GND Black
19 GND Black
20 NC NC
21 +5 VDC Red
22 +5 VDC Red
23 +5 VDC Red
24 GND Black
Pin Number Signal Name 18-AWG Wire
1 GND Black
2 GND Black
3 +12 VADC Yellow
4 +12 VADC Yellow
Pin Number Signal name 18-AWG Wire
1 +3.3 VDC Orange
2 GND Black
3 +5 VDC Red
4 GND Black
5 +12 VBDC White