HP dx7300 Technical Reference Manual page 129

Figure 7-3 shows the power supply cabling for the SFF/ST systems.
Power Supply
403778
Conn Pin 1
P1 +5
aux
P1 [1] +12
P2 +5
P3 RTN
P4, 5, +3.3
7
Connectors not shown to scale.
All + and - values are VDC.
RTN = Return (signal ground)
sns = sense
GND = Power ground
RS = Remote sense
FC = Fan command
FO = Fan off
FSpd = Fan speed
FS = Fan Sink
POK = Power OK (power good)
VccP = +12 for CPU
[1] This row represents pins 13–24 of connector P1
Figure 7-3. SFF/ST Power Cable Diagram
Technical Reference Guide
P7
P4
Pin 2 Pin 3 Pin 4 Pin 5
RTN + 5 +5 PS On
+5 sns RTN +5 +5
RTN RTN +12
RTN RTN VccP VccP
RTN +5 RTN +12
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P2
P5
P4, P5, P7
5
P3
4
P1
13
1
Pin 6 Pin 7 Pin 8
RTN Pwr Gd +3.3
+3.3 RTN +3.3 sns
+12
Power and Signal Distribution
4 3 2 1
4 P3
P2
1
3 2 1
P1
Pin Pin
Pin 9 10 1 1
+3.3 Tach RTN
+3.3 +3.3 RTN
6
3
24
12
Pin
12
Fan
- 1 2
7-9