HP Compaq dc7800 Series User Manual

Technical Reference Guide www.hp.com 7-5
Power and Signal Distribution
Figure 7-5 shows the power supply cabling for CMT systems.
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)
FC = Fan Command
[1] This row represents pins 13–24 of connector P1.
Figure 7-5. CMT Power Cable Diagram
7.2.4 Energy Star Compliancy
The standard power supply unit for SFF and CMT systems is Energy Star 3.0-compliant. An
Energy Star 4.0 (80 Plus-compliant) power supply unit is used for the SFF and CMT form factors
in select configurations. The standard USDT power supply unit is compliant with the Energy Star
4.0 specification.
Conn Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9
Pin
10
Pin
11
Pin
12
P1 +3.3 +3.3 RTN +5 RTN +5 RTN POK 5 aux +12 +12 +3.3
P1 [1] +3.3 -12 RTN PS On RTN RTN RTN Open +5 +5 +5 RTN
P3 RTN RTN VccP VccP
P4, 5, 9,
10, 11
+3.3 RTN +5.08 RTN +12
P6 +12 RTN RTN +5
P8 +5 RTN RTN +12
Power Supply
Unit
P1
P5
P1
13
1
12
P4, P5, P9, P10, P11
24
1
2
3
4
12
3
4
5
1
23
4
P8
P3
P6
P4
P3
P6
1
3
2
4
P10
P9
P11
P8

HP Compaq dc7800 Series Specifications

General

Processor	Intel Core 2 Duo, Intel Pentium Dual-Core, Intel Celeron
Chipset	Intel Q35 Express
Memory	Up to 8 GB DDR2 SDRAM
Audio	Integrated High Definition Audio
Form Factor	Ultra-slim desktop, Small form factor, Convertible minitower
Storage	80GB to 500GB SATA HDD
Graphics	Integrated Intel Graphics Media Accelerator 3100
Optical Drive	DVD-ROM, DVD+/-RW
Network	Integrated Gigabit Network Connection
Ports	USB 2.0, VGA, serial, parallel, audio in/out
Operating System	Windows Vista, Windows XP, FreeDOS
Expansion Slots	1 low-profile PCI, 1 low-profile PCI Express x16
Power Supply	240W