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Intel® Desktop Board DH77DF Technical Product Specification April 2012 Part Number: G54939-001 The Intel Desktop Board DH77DF may contain design defects or errors known as errata that may cause the product to deviate from published specifications. Current characterized errata are documented in the Intel Desktop Board DH77DF Specification Update.

Section	Page
Intel® Desktop Board DH77DF Technical Product Specification	1
Revision History	2
Board Identification Information	3
Errata	3
Preface	5
Intended Audience	5
What This Document Contains	5
Typographical Conventions	5
Contents	7
1 Product Description	11
1.1 Overview	11
1.1.1 Feature Summary	11
1.1.2 Board Layout (Top)	13
1.1.3 Board Layout (Bottom)	15
1.1.4 Block Diagram	16
1.2 Online Support	17
1.3 Processor	17
1.3.1 Graphics Subsystem	18
1.4 System Memory	20
1.4.1 Memory Configurations	21
1.5 Intel® H77 Express Chipset	23
1.5.1 Direct Media Interface (DMI)	23
1.5.2 Display Interfaces	23
1.5.3 USB	26
1.5.4 SATA Interfaces	27
1.6 Real-Time Clock Subsystem	29
1.7 Legacy I/O Controller	29
1.7.1 Consumer Infrared (CIR)	29
1.8 Audio Subsystem	30
1.8.1 Audio Subsystem Software	30
1.8.2 Audio Subsystem Components	31
1.9 LAN Subsystem	32
1.9.1 Intel® 82579V Gigabit Ethernet Controller	32
1.9.2 LAN Subsystem Software	33
1.9.3 RJ-45 LAN Connector with Integrated LEDs	33
1.10 Hardware Management Subsystem	34
1.10.1 Hardware Monitoring	34
1.10.2 Fan Monitoring	34
1.10.3 Chassis Intrusion and Detection	34
1.10.4 Thermal Monitoring	35
1.11 Power Management	36
1.11.1 ACPI	36
1.11.2 Hardware Support	38
2 Technical Reference	43
2.1 Memory Resources	43
2.1.1 Addressable Memory	43
2.1.2 Memory Map	45
2.2 Connectors and Headers	45
2.2.1 Back Panel Connectors	46
2.2.2 Component-side Connectors and Headers (Top)	47
2.2.3 Component-side Connectors and Headers (Bottom)	49
2.3 Jumper Block	59
2.4 Mechanical Considerations	61
2.4.1 Form Factor	61
2.5 Electrical Considerations	62
2.5.1 Power Supply Considerations	62
2.5.2 Power Supervisor	63
2.5.3 Fan Header Current Capability	63
2.5.4 Add-in Board Considerations	63
2.6 Thermal Considerations	64
2.7 Reliability	67
2.8 Environmental	67
3 Overview of BIOS Features	69
3.1 Introduction	69
3.2 BIOS Flash Memory Organization	70
3.3 Resource Configuration	70
3.3.1 PCI Express Autoconfiguration	70
3.4 System Management BIOS (SMBIOS)	71
3.5 Legacy USB Support	71
3.6 BIOS Updates	72
3.6.1 Language Support	72
3.6.2 Custom Splash Screen	73
3.7 BIOS Recovery	73
3.8 Boot Options	74
3.8.1 Optical Drive Boot	74
3.8.2 Network Boot	74
3.8.3 Booting Without Attached Devices	74
3.8.4 Changing the Default Boot Device During POST	74
3.9 Adjusting Boot Speed	75
3.9.1 Peripheral Selection and Configuration	75
3.9.2 BIOS Boot Optimizations	75
3.10 BIOS Security Features	76
3.11 BIOS Performance Features	77
4 Error Messages and Beep Codes	79
4.1 Speaker	79
4.2 BIOS Beep Codes	79
4.3 Front-panel Power LED Blink Codes	80
4.4 BIOS Error Messages	80
4.5 Port 80h POST Codes	81
5 Regulatory Compliance and Battery Disposal Information	87
5.1 Regulatory Compliance	87
5.1.1 Safety Standards	87
5.1.2 European Union Declaration of Conformity Statement	88
5.1.3 Product Ecology Statements	89
5.1.4 China RoHS	92
5.1.5 EMC Regulations	93
5.1.6 ENERGY STAR* 5.0, e-Standby, and ErP Compliance	95
5.1.7 Regulatory Compliance Marks (Board Level)	96

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Intel® Desktop Board

DH77DF

Technical Product Specification

April 2012

Part Number:

G54939-001

The Intel Desktop Board DH77DF may contain design defects or errors known as errata that may cause the product to deviate from published specifications.

Current characterized errata are documented in the Intel Desktop Board DH77DF Specification Update.