HP LK585LT Datasheet download pdf (Page 73)

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Technical Reference Guide www.hp.com 7-1

Power and Signal Distribution

7.1 Introduction

This chapter describes the power supplies and discusses the methods of general power and signal

distribution. Topics covered in this chapter include:

■ Power distribution (7.2)

■ Power control (7.3)

■ Power management (7.4)

■ Signal distribution (7.5)

7.2 Power Dis trib u tio n

Two methods are used for power distribution in these systems. The USDT form factor employs a

separate, external AC “brick” power supply while the SFF, MT, and CMT form factors use a

power supply unit that mounts inside the chassis.

1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 113 114

Technical Reference Guide 1
First Edition (March 2011) 2
Contents 3
3 Processor/Memory Subsystem 4
4 System Support 4
5 Input/Output Interfaces 4
8 SYSTEM BIOS 6
A Error Messages and Codes 6
1.3 Serial Number 8
1.4 Notational Conventions 8
Table 1-1 9
Table 1-1 (Continued) 10
Introduction 16
System Overview 17
2.2 Features 18
Table 2-1 19
2.3 System Architecture 20
Power Supply 21
2.3.1 Intel Processor Support 22
2.3.2 Chipset 22
2.3.3 Support Components 23
2.3.4 System Memory 23
PS/2 Port 24
Serial port 24
Parallel port 24
2.3.9 Graphics Subsystem 25
2.3.10 Audio Subsystem 25
2.4 Specifications 26
Table 2-6 27
Physical Specifications 27
Processor/Memory Subsystem 29
3.2 Intel Processor 30
3.3 Memory Subsystem 32
3.3.1 Memory Upgrading 33
System Support 35
Software/Driver Layer 36
Transaction Protocol Layer 36
4.2.3 Option ROM Mapping 37
4.2.4 PCI Interrupts 37
4.2.6 PCI Connectors 38
PCIe Connectors 39
4.3 System Resources 40
4.3.2 Direct Memory Access 41
4.4.1 Clearing CMOS 42
4.5 System Management 43
Power-On / Setup Password 44
Setup Password 44
Cable Lock Provision 44
I/O Interface Security 44
Chassis Security 44
4.5.2 Power Management 45
4.5.3 System Status 46
4.6.1 System I/O Map 47
Table 4-8 48
System I/O Map 48
4.6.2 GPIO Functions 49
Input/Output Interfaces 51
5.2 SATA/eSATA Interfaces 52
5.2.2 eSATA interface 53
5.3 Serial Interface 54
23456789-qw 56
Table 5-4 58
Table 5-5 59
PCH USB Port Mapping 59
5.6.1 USB Connector 60
5.6.2 USB Cable Data 60
5.7 Audio Subsystem 61
5.7.1 HD Audio Controller 62
5.7.2 HD Audio Link Bus 62
5.7.3 Audio Multistreaming 62
5.7.4 Audio Specifications 63
5.8.1 Wake-On-LAN Support 65
5.8.3 NIC Connector 65
5.8.4 NIC Specifications 66
Integrated Graphics Subsystem 67
Table 6-2 69
Table 6-3 69
IGC Supported Resolutions 70
6.3 Upgrading 71
6.4 Monitor Connectors 71
6.4.2 DisplayPort Connector 72
Power and Signal Distribution 73
Table 7-1 74
Table 7-2 76
Table 7-3 76
7.3 Powe r Co nt ro l 77
Table 7-5 78
Power LED Indications 78
Power LED Condition 78
7.4 Power Ma na g em en t 79
Table 7-6 80
System Power States 80
State System Condition 80
7.5 Signal Distribution 81
Table 7-7. (Continued) 82
System BIOS 85
8.2 ROM Flashing 86
8.3 Boot Functions 87
8.3.4 Boot Error Codes 88
Table 8-1 89
Boot Error Codes 89
Table 8-2 90
8.5 SMBIOS Support 91
8.6 USB Legacy Support 91
Error Messages and Codes 93
Table A-2. (Continued) 97
Error Message Probable Cause 97
67xx-xx) 111
(8601-xx) 112

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