Power and Signal Distribution

7.4Signal Distribution

Table 7-6 lists key 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 7-6.

 

System Board Component Designations

 

 

DesignatorComponent function

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

Quad-stacked USB connectors

J20

PCI 2.3 connector

J31

PCIe x1 connector

J32

PCIe x1 connector

J41

PCIe x16 graphics connector

J68

Stacked keyboard, mouse PS/2 connectors

J69

Analog VGA monitor DB-15 connector

J70

Digital DVI-D connector

J78

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

J103

DC input

P1

Power supply connector

P3

Vccp (PWRCPU) header

P5

Control panel (power button, power LED) header

P6

Internal speaker header

P8

System fan header

P9

Chassis fan, primary, header

P10

Diskette drive connector

P23

Front panel audio header

P24

Front panel USB header

P52

Serial port, secondary, header

P53

Serial port, primary connector

P54

Serial port, primary header

P60

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

P61

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

P62

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

P63

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

P70

Primary CPU (heatsink) fan header

P126

Parallel port header

P150

Media reader USB header

SW50

Clear CMOS switch

XMM1, 2

Memory slots, channel A (white)

XMM3, 4

Memory slots, channel B (black)

XU1

Processor socket

XB2

Battery socket

 

7-8

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Technical Reference Guide