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Signal Distribution

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Power and Signal Distribution 7.4 Signal 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. Designator CR1 E1 E14 E49 / JP49 J9 J10 J20 J21 J22 J31 J32 J41 J50 J68 J69 J78 J103 P1 P3 P5 P6 P8 P9 P10 P20 P21 P23 P24 P52 P53 P54 P60 P61 P62 P63 P70 P124 P125 P126 P150 Table 7-7. System Board Component Designations Component function +5 VDC LED Descriptor table override header SPI ROM boot block header Password clear header / jumper Stacked RJ-45 & dual USB connectors Stacked quad USB connectors PCI 2.3 connector PCI 2.3 connector PCI 2.3 connector PCIe x1 connector PCIe x1 connector PCIe x16 (graphics) connector Parallel port, DB-25 connector Stacked keyboard, mouse PS/2 connectors VGA monitor DB-15 connector Stacked audio line-in, headphone/line-out 1/8" jacks DC input Power supply connector Vccp (PWRCPU) header Control panel (power button, power LED) header Internal speaker header CPU fan header Chassis fan, primary, header Diskette drive connector PATA (IDE), primary, connector PATA (IDE), secondary, connector Front panel audio header Front panel USB header Serial port, secondary, header Serial port, primary connector Serial port, primary header SATA0 (controller 1, primary) connector (dark blue) SATA1 (controller 1, secondary) connector (white) SATA4 (controller 2, primary) connector (light blue) SATA5 (controller 2, secondary) connector (orange) CPU fan, primary header Hood lock header Hood sense header Parallel port header Media reader header Notes SFF & CMT only CMT only CMT only SFF & CMT only SFF & CMT only SFF & CMT only SFF & CMT only USDT only SFF & CMT only SFF & CMT only n/a USDT only SFF & CMT only CMT only SFF only SFF & CMT only SFF & CMT only CMT only CMT only USDT only 7-10 www.hp.com Technical Reference Guide

Section	Page
Title	1
Table of Contents	3
Chapter 1: Introduction	7
1.1 About this Guide	7
1.1.1 Online Viewing	7
1.1.2 Hardcopy	7
1.2 Additional Information Sources	7
1.3 Model Numbering Convention	7
1.4 Serial Number	9
1.5 Notational Conventions	9
1.5.1 Special Notices	9
1.5.2 Values	9
1.5.3 Ranges	9
1.6 Common Acronyms and Abbreviations	10
Chapter 2: System Overview	17
2.1 Introduction	17
2.2 Features	18
2.3 System Architecture	20
2.3.1 Intel Processor Support	22
2.3.2 Chipset	23
2.3.3 Support Components	24
2.3.4 System Memory	24
2.3.5 Mass Storage	25
2.3.6 Serial and Parallel Interfaces	25
2.3.7 Universal Serial Bus Interface	25
2.3.8 Network Interface Controller	25
2.3.9 Graphics Subsystem	26
2.3.10 Audio Subsystem	26
2.4 Specifications	27
Chapter 3: Processor/Memory Subsystem	33
3.1 Introduction	33
3.2 Intel Processors	34
3.2.1 Intel Processor Overview	34
3.2.2 Processor Changing/Upgrading	35
3.3 Memory Subsystem	36
3.3.1 Memory Upgrading	37
3.3.2 Memory Mapping and Pre-allocation	37
Chapter 4: System Support	39
4.1 Introduction	39
4.2 PCI Bus Overview	39
4.2.1 PCI 2.3 Bus Operation	39
4.2.2 PCI Express Bus Operation	41
4.2.3 Option ROM Mapping	42
4.2.4 PCI Interrupts	42
4.2.5 PCI Power Management Support	42
4.2.6 PCI Connectors	43
4.3 System Resources	45
4.3.1 Interrupts	45
4.3.2 Direct Memory Access	46
4.4 Real-Time Clock and Configuration Memory	47
4.4.1 Clearing CMOS	47
4.4.2 Standard CMOS Locations	48
4.5 System Management	48
4.5.1 Security Functions	48
4.5.2 Power Management	50
4.5.3 System Status	51
4.5.4 Thermal Sensing and Cooling	51
4.6 Register Map and Miscellaneous Functions	52
4.6.1 System I/O Map	52
4.6.2 GPIO Functions	53
Chapter 5: Input/Output Interfaces	55
5.1 Introduction	55
5.2 SATA Interface	56
5.3 PATA Interface	57
5.4 Diskette Drive Interface	58
5.5 Serial Interface	60
5.6 Parallel Interface	61
5.6.1 Standard Parallel Port Mode	61
5.6.2 Enhanced Parallel Port Mode	61
5.6.3 Extended Capabilities Port Mode	61
5.6.4 Parallel Interface Connector	62
5.7 Keyboard/Pointing Device Interface	63
5.7.1 Keyboard Interface Operation	63
5.7.2 Pointing Device Interface Operation	64
5.7.3 Keyboard/Pointing Device Interface Connector	64
5.8 Universal Serial Bus Interface	65
5.8.1 USB Connector	65
5.8.2 USB Cable Data	66
5.9 Audio Subsystem	67
5.9.1 HD Audio Controller	68
5.9.2 HD Audio Link Bus	68
5.9.3 Audio Multistreaming	68
5.9.4 Audio Specifications	69
5.10 Network Interface Controller	70
5.10.1 Wake-On-LAN Support	71
5.10.2 Alert Standard Format Support	71
5.10.3 Power Management Support	71
5.10.4 NIC Connector	72
5.10.5 NIC Specifications	72
Chapter 6: Integrated Graphics	73
6.1 Introduction	73
6.2 Functional Description	74
6.3 Display Modes	76
6.4 Upgrading	77
6.5 Monitor Connectors	78
6.5.1 Analog Monitor Connector	78
6.5.2 Digital Monitor Connector	79
Chapter 7: Power and Signal Distribution	81
7.1 Introduction	81
7.2 Power Distribution	81
7.2.1 USDT Power Distribution	81
7.2.2 SFF Power Distribution	82
7.2.3 CMT Power Distribution	84
7.2.4 Energy Star Compliancy	85
7.3 Power Control	86
7.3.1 Power Button	86
7.3.2 Wake Up Events	88
7.3.3 Power Management	89
7.4 Signal Distribution	90
Chapter 8: System BIOS	93
8.1 Introduction	93
8.2 ROM Flashing	94
8.2.1 Upgrading	94
8.2.2 Changeable Splash Screen	94
8.3 Boot Functions	95
8.3.1 Boot Device Order	95
8.3.2 Network Boot (F12) Support	95
8.3.3 Memory Detection and Configuration	95
8.3.4 Boot Error Codes	96
8.4 Client Management Functions	97
8.4.1 System ID and ROM Type	98
8.4.2 Temperature Status	98
8.4.3 Drive Fault Prediction	98
8.5 SMBIOS	99
8.6 USB Legacy Support	100
8.7 Management Engine Functions	100

Match case Limit results 1 per page

7-10

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Technical Reference Guide

Power and Signal Distribution

7.4 Signal 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

Descriptor table override header

E14

SPI ROM boot block header

E49 / JP49

Password clear header / jumper

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

J50

Parallel port, DB-25 connector

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

Power supply connector

SFF & CMT only

Vccp (PWRCPU) header

Control panel (power button, power LED) header

Internal speaker header

CPU fan header

Chassis fan, primary, header

P10

Diskette drive connector

SFF & CMT only

P20

PATA (IDE), primary, connector

n/a

P21

PATA (IDE), secondary, connector

USDT only

P23

Front panel audio header

P24

Front panel USB header

P52

Serial port, secondary, header

SFF & CMT only

P53

Serial port, primary connector

CMT only

P54

Serial port, primary header

SFF only

P60

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

P61

SATA1 (controller 1, secondary) connector (white)

SFF & CMT only

P62

SATA4 (controller 2, primary) connector (light blue)

SFF & CMT only

P63

SATA5 (controller 2, secondary) connector (orange)

CMT only

P70

CPU fan, primary header

CMT only

P124

Hood lock header

P125

Hood sense header

P126

Parallel port header

USDT only

P150

Media reader header