Power and Signal Distribution

7.4Signal Distribution

Table 7-7 lists the reference designators for LEDs, connectors, headers, and switches used on the system boards for systems covered in this guide. Unless otherwise indicated, components are used on all system boards.

 

 

 

Table 7-7.

 

 

 

 

 

 

System Board Component Designations

 

 

 

 

 

 

 

 

 

 

 

Designator

Component function

Notes

 

 

CR1

+5 VDC LED

 

 

 

 

 

E1

Descriptor table override header

 

 

 

 

 

E14

SPI ROM boot block header

 

 

 

 

 

E49 / JP49

Password clear header / jumper

 

 

 

 

 

J9

Stacked RJ-45 & dual USB connectors

 

 

 

 

 

J10

Stacked quad USB connectors

 

 

 

 

 

J20

PCI 2.3 connector

SFF & CMT only

 

 

 

J21

PCI 2.3 connector

CMT only

 

 

 

J22

PCI 2.3 connector

CMT only

 

 

 

J31

PCIe x1 connector

SFF & CMT only

 

 

 

J32

PCIe x1 connector

SFF & CMT only

 

 

 

J41

PCIe x16 graphics connector

SFF & CMT only

 

 

 

J42

PCIe x4 graphics (x16) connector

SFF & CMT only

 

 

 

J50

Parallel port

SFF & CMT only

 

 

 

J68

Stacked keyboard, mouse PS/2 connectors

 

 

 

 

 

J69

VGA monitor DB-15 connector

 

 

 

 

 

J78

Stacked audio line-in, headphone/line-out 1/8” jacks

 

 

 

 

 

J103

DC input

USDT only

 

 

 

P1

Power supply connector

SFF & CMT only

 

 

 

P3

Vccp (PWRCPU) header

 

 

 

 

 

P5

Control panel (power button, power LED) header

 

 

 

 

 

P6

Internal speaker header

 

 

 

 

 

P8

CPU fan header

 

 

 

 

 

P9

Chassis fan, primary, header

 

 

 

 

 

P10

Diskette drive connector

SFF & CMT only

 

 

 

P23

Front panel audio header

 

 

 

 

 

P24

Front panel USB header

 

 

 

 

 

P52

Serial port, secondary, header

SFF & CMT only

 

 

 

P53

Serial port, primary connector

SFF & CMT only

 

 

 

P54

Serial port, primary header

SFF only

 

 

 

P60

SATA0 (controller 1, primary master) connector (dark blue)

 

 

 

 

 

P61

SATA1 (controller 1, secondary master) connector (white)

SFF & CMT only

 

 

 

P62

SATA2 (controller 1, primary slave) connector (light blue)

SFF & CMT only

 

 

 

P63

SATA3 (controller 1, secondary slave) connector (orange)

CMT only

 

 

 

P64

SATA4 / eSATA (controller 2, primary master) connector (black)

SFF & CMT only

 

 

 

P124

Hood lock header

SFF & CMT only

 

 

 

P125

Hood sense header

 

 

 

 

 

P126

Parallel port header

SFF and CMT only

 

 

 

P150

Media reader header

 

 

 

 

 

P151

Ready boost / dash NIC header

 

 

 

 

 

 

 

 

 

 

 

7-10

 

www.hp.com

Technical Reference Guide

 

Page 88
Image 88
HP dc7900 manual Signal Distribution, CR1 +5 VDC LED

dc7900 specifications

The HP dc7900 is a well-regarded desktop solution that serves as a testament to HP's commitment to performance, reliability, and user accessibility. Introduced as part of HP’s Compaq line and designed primarily for business professionals, the dc7900 combines powerful processing capabilities with a compact form factor that suits various office environments.

One of the standout features of the HP dc7900 is its robust configuration options. It typically comes equipped with Intel's Core 2 Duo or Quad processors, giving users the ability to handle demanding applications seamlessly. The inclusion of Intel's technologies, such as Intel vPro, enhances remote management and IT control, making it an ideal choice for businesses looking to streamline their operations.

The dc7900 is designed with flexibility in mind. It offers multiple form factors, including mini-tower, small form factor, and ultra-slim desktop configurations. This variety enables organizations to choose a model that best fits their workspace requirements, maximizing both efficiency and aesthetics. The small footprint models are particularly beneficial in space-constrained environments, while the mini-tower version provides expandability for future upgrades.

In terms of graphics capabilities, the HP dc7900 typically features integrated Intel graphics, with options to install discrete graphics cards for users who require enhanced visual performance. This makes the dc7900 suitable for tasks ranging from standard office applications to more graphics-intensive responsibilities.

Connectivity is another key characteristic of the HP dc7900. It is equipped with a variety of ports, including USB 2.0 and audio jacks, allowing users to connect peripherals easily. Additionally, the dc7900 supports legacy connections, making it easier for businesses with older equipment to integrate new systems without hassle.

Durability and reliability are hallmarks of the HP dc7900. Built with high-quality materials and subjected to rigorous testing, this desktop is designed to withstand the demands of a bustling office environment. Furthermore, HP's comprehensive warranty and support options assure businesses of the reliability of their investment.

The HP dc7900 is not just a powerful desktop; it’s a versatile and dependable solution for modern businesses. With its combination of performance, expandability, and solid build quality, the dc7900 remains a relevant choice for those looking to enhance their productivity and efficiency in the workplace.