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Fan Header Current Capability, Add-in Board Considerations

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Intel Desktop Board DH61HO Technical Product Specification 2.5.2 Fan Header Current Capability CAUTION The processor fan must be connected to the processor fan header, not to a chassis fan header. Connecting the processor fan to a chassis fan header may result in onboard component damage that will halt fan operation. Table 24 lists the current capability of the fan headers. Table 24. Fan Header Current Capability Fan Header Maximum Available Current Processor fan 2.0 A Rear chassis fan 1.5 A 2.5.3 Add-in Board Considerations The board is designed to provide 2 A (average) of current for each add-in board from the +5 V rail. The total +5 V current draw for add-in boards for a fully loaded board (all expansion slots filled) must not exceed the system's power supply +5 V maximum current. 50

Section	Page
Intel® Desktop Board DH61HO Technical Product Specification	1
Revision History	2
Disclaimer	2
Board Identification Information	3
Specification Changes or Clarifications	3
Errata	3
Preface	5
Contents	7
1 Product Description	11
1.1 Overview	11
1.1.1 Feature Summary	11
1.1.2 Board Layout	13
1.1.3 Block Diagram	15
1.2 Online Support	16
1.3 Processor	16
1.4 Intel® H61 Express Chipset	17
1.5 System Memory	17
1.5.1 Memory Configurations	18
1.6 Graphics Subsystem	19
1.6.1 Integrated Graphics	19
1.7 USB	20
1.8 SATA Interfaces	20
1.9 Legacy I/O Controller	20
1.9.1 Serial Port	21
1.10 Audio Subsystem	21
1.10.1 Audio Subsystem Software	21
1.10.2 Audio Headers and Connectors	22
1.11 LAN Subsystem	23
1.11.1 Realtek RTL8111E Gigabit Ethernet Controller	23
1.11.2 LAN Subsystem Software	23
1.11.3 RJ-45 LAN Connector with Integrated LEDs	24
1.12 Real-Time Clock Subsystem	25
1.13 Thermal Monitoring	26
1.14 Platform Management and Security	27
1.14.1 Hardware Management Subsystem	27
1.14.2 Hardware Monitoring	27
1.15 Power Management	28
1.15.1 ACPI	28
1.15.2 Hardware Support	31
2 Technical Reference	35
2.1 Memory Resources	35
2.1.1 Addressable Memory	35
2.1.2 Memory Map	37
2.2 Connectors and Headers	37
2.2.1 Back Panel Connectors	38
2.2.2 Component-side Connectors and Headers	39
2.3 BIOS Configuration Jumper Block	47
2.4 Mechanical Considerations	48
2.4.1 Form Factor	48
2.5 Electrical Considerations	49
2.5.1 Power Supply Considerations	49
2.5.2 Fan Header Current Capability	50
2.5.3 Add-in Board Considerations	50
2.6 Thermal Considerations	51
2.7 Reliability	53
2.8 Environmental	53
3 Overview of BIOS Features	55
3.1 Introduction	55
3.2 System Management BIOS (SMBIOS)	57
3.3 Legacy USB Support	57
3.4 BIOS Updates	58
3.4.1 Language Support	58
3.4.2 Custom Splash Screen	59
3.5 BIOS Recovery	59
3.6 Boot Options	60
3.6.1 Optical Drive Boot	60
3.6.2 Network Boot	60
3.6.3 Booting Without Attached Devices	60
3.6.4 Changing the Default Boot Device During POST	60
4 Error Messages and Beep Codes	61
4.1 Speaker	61
4.2 BIOS Beep Codes	61
4.3 Front-panel Power LED Blink Codes	62
4.4 BIOS Error Messages	62
4.5 Port 80h POST Codes	63
5 Regulatory Compliance and Battery Disposal Information	69
5.1 Regulatory Compliance	69
5.1.1 Safety Standards	69
5.1.2 European Union Declaration of Conformity Statement	70
5.1.3 Product Ecology Statements	71
5.1.4 EMC Regulations	73
5.1.5 ENERGY STAR* 5.0, e-Standby, and ErP Compliance	76
5.1.6 Regulatory Compliance Marks (Board Level)	77