Dell XPS/Dimension XPS Gen 2 - Manual (Page 42)

DC Power Connector P2
DC Power Connector P3
2 COM Black
3 +5 VDC Red
4 COM Black
5 PWR GOOD White
6 +5 VSB Purple
7 +12 VA Yellow
8 -12 V Blue
9 COM Black
10 COM Black
11 +3.3 VDC Blue and white
12 +3.3 VDC Blue and white
13 PS-ON Gray
14 COM Black
15 COM Black
16 COM Black
17 N/C
18 +5 VDC Red
19 N/C
20 +5 VDC Red
21 TSFC (1) Brown
22 +5 VDC Red
23 +3.3 VDC Blue and white
24 COM Black
Pin Number Signal Name 18-AWG Wire
1 +3.3 VDC Blue and white
2 +3.3 VDC Blue and white
3 +3.3 VDC Blue and white
4 +3.3 VDC Blue and white
5 COM Black
6 COM Black
7 N/C
8 COM Black
9 +12 VA Yellow
10 COM Black
11 N/C
12 +12 VB Orange
13 +12 VB Orange
14 +12 VB Orange
15 COM Black
16 N/C
17 COM Black
18 COM Black
19 TSFC (2) Pink
20 +5 VDC Red