Energy Star Compliancy - HP Compaq dc7900 USDT Technical Reference Manual

Figure 7-4 shows the power supply cabling for CMT systems.
Power Supply
Unit
Conn Pin 1
P1 +3.3
P1 [1] +3.3
P3 RTN
P4, 5, 9, +3.3
10, 1 1
P6 +12
P8 +5
NOTES:
Connectors not shown to scale.
All + and - values are VDC.
RTN = Return (signal ground)
GND = Power ground
RS = Remote sense
POK = Power ok (power good)
[1] This row represents pins 13–24 of connector P1.
Figure 7-4. CMT Power Cable Diagram

7.2.3 Energy Star Compliancy

The standard USDT power supply unit is 87 percent efficient and compliant with the Energy Star
4.0 specification. The standard power supply unit for SFF and CMT systems is Energy Star
3.0-compliant. An Energy Star 4.0 (80Plus Bronze-compliant) power supply unit is available as
an option for the SFF and CMT form factors.
Technical Reference Guide
P9 P10
P6
Pin 2 Pin 3 Pin 4 Pin 5
+3.3 RTN +5 RTN
- 1 2 RTN PS On RTN
RTN VccP VccP
RTN +5.08 RTN +12
RTN RTN +5
RTN RTN +12
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P11
P8
P4 P5
4
3
P3
1 2 3 4
P1
13
1
Pin 6 Pin 7 Pin 8
+5 RTN POK
RTN RTN PSDet
Power and Signal Distribution
P4, P5, P9, P10, P11
5
4 3 2 1
P8
P3
2 1
2
4
P6
3
1
P1
24
12
Pin Pin
Pin 9 10 1 1
5 aux +12 +12
+5 +5 +5
Pin
12
+3.3
RTN
7-5