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Intel D975XBX2 Product Specification - Page 84

Legacy USB Support, BIOS Updates - reviews

UPC - 735858186179

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Intel Desktop Board D975XBX2 Technical Product Specification 3.5 Legacy USB Support Legacy USB support enables USB devices to be used even when the operating system's USB drivers are not yet available. Legacy USB support is used to access the BIOS Setup program, and to install an operating system that supports USB. Legacy USB support operates as follows: 1. When you apply power to the computer, legacy support is disabled. 2. POST begins. 3. Legacy USB support is enabled by the BIOS allowing you to use a USB keyboard to enter and configure the BIOS Setup program and the maintenance menu. 4. POST completes. 5. The operating system loads. While the operating system is loading, USB keyboards and mice are recognized and may be used to configure the operating system. 6. After the operating system loads the USB drivers, all legacy and non-legacy USB devices are recognized by the operating system, and Legacy USB support from the BIOS is no longer used. To install an operating system that supports USB, follow the operating system's installation instructions. 3.6 BIOS Updates The BIOS can be updated using either of the following utilities, which are available on the Intel World Wide Web site: • Intel® Express BIOS Update utility, which enables automated updating while in the Microsoft Windows environment. Using this utility, the BIOS can be updated from a file on a hard disk, a 1.44 MB diskette, or a CD-ROM, or from the file location on the Web. • Intel® Flash Memory Update Utility, which requires creation of a boot diskette and manual rebooting of the system. Using this utility, the BIOS can be updated from a file on a 1.44 MB diskette or a CD-ROM. Both utilities verify that the updated BIOS matches the target system to prevent accidentally installing an incompatible BIOS. NOTE Review the instructions distributed with the upgrade utility before attempting a BIOS update. For information about The Intel World Wide Web site Refer to Section 1.2, page 17 84

Section	Page
Intel® Desktop Board D975XBX2 Technical Product Specification	1
Revision History / Disclaimer	2
Preface	3
Intended Audience	3
What This Document Contains	3
Typographical Conventions	3
Contents	5
1 Product Description	11
1.1 Overview	12
1.1.1 Feature Summary	12
1.1.2 Manufacturing Options	13
1.1.3 Board Layout	14
1.1.4 Block Diagram	16
1.2 Online Support	17
1.3 Processor	17
1.4 System Memory	18
1.4.1 Memory Configurations	20
1.5 Intel® 975X Chipset	24
1.5.1 USB	24
1.5.2 IDE Support	25
1.5.3 Real-Time Clock, CMOS SRAM, and Battery	26
1.6 Discrete Serial ATA Interface (Optional)	27
1.6.1 Serial ATA Controller	27
1.6.2 External Serial ATA Support	27
1.7 PCI Express Connectors	28
1.8 IEEE-1394a Connectors (Optional)	29
1.9 Legacy I/O Controller	29
1.9.1 Serial Port	29
1.9.2 Parallel Port	30
1.9.3 Diskette Drive Controller	30
1.9.4 Keyboard and Mouse Interface	30
1.10 Audio Subsystem	31
1.10.1 Audio Subsystem Software	31
1.10.2 Audio Connectors	31
1.10.3 8-Channel (7.1) Audio Subsystem	32
1.10.4 6-Channel (5.1) Audio Subsystem	33
1.11 LAN Subsystem	34
1.11.1 Intel® 82573E/82573L Gigabit Ethernet Controller	34
1.11.2 RJ-45 LAN Connector with Integrated LEDs	34
1.11.3 Alert Standard Format (ASF) Support	35
1.11.4 Intel® Active Management Technology (Optional)	35
1.11.5 LAN Subsystem Software	37
1.12 Hardware Management Subsystem	37
1.12.1 Hardware Monitoring and Fan Control ASIC	37
1.12.2 Thermal Monitoring	38
1.12.3 Fan Monitoring	39
1.12.4 Chassis Intrusion and Detection	39
1.13 Power Management	39
1.13.1 ACPI	39
1.13.2 Hardware Support	42
1.14 Onboard Power Button	46
1.15 Onboard LEDs	47
1.16 Trusted Platform Module (Optional)	48
2 Technical Reference	49
2.1 Memory Resources	49
2.1.1 Addressable Memory	49
2.1.2 Memory Map	51
2.2 DMA Channels	51
2.3 Fixed I/O Map	52
2.4 PCI Configuration Space Map	53
2.5 Interrupts	54
2.6 PCI Conventional Interrupt Routing Map	55
2.7 Connectors	56
2.7.1 Back Panel Connectors	56
2.7.2 Component-side Connectors and Headers	59
2.8 Jumper Block	70
2.9 Mechanical Considerations	71
2.9.1 Form Factor	71
2.9.2 I/O Shield	72
2.10 Electrical Considerations	74
2.10.1 DC Loading	74
2.10.2 Add-in Board Considerations	74
2.10.3 Fan Header Current Capability	75
2.10.4 Power Supply Considerations	75
2.11 Thermal Considerations	76
2.12 Reliability	78
2.13 Environmental	79
3 Overview of BIOS Features	81
3.1 Introduction	81
3.2 Resource Configuration	82
3.2.1 PCI Autoconfiguration	82
3.2.2 PCI IDE Support	82
3.3 System Management BIOS (SMBIOS)	83
3.4 Watchdog Timer	83
3.5 Legacy USB Support	84
3.6 BIOS Updates	84
3.6.1 Language Support	85
3.6.2 Custom Splash Screen	85
3.7 Boot Options	85
3.7.1 CD-ROM Boot	85
3.7.2 Network Boot	85
3.7.3 Booting Without Attached Devices	86
3.7.4 Changing the Default Boot Device During POST	86
3.8 BIOS Security Features	87
4 Error Messages and Beep Codes	89
4.1 Speaker	89
4.2 BIOS Beep Codes	89
4.3 BIOS Error Messages	89
4.4 Port 80h POST Codes	90
5 Regulatory Compliance and Battery Disposal Information	95
5.1 Regulatory Compliance	95
5.1.1 Safety Regulations	95
5.1.2 European Union Declaration of Conformity Statement	95
5.1.3 Product Ecology Statements	97
5.1.4 EMC Regulations	101
5.1.5 Product Certification Markings (Board Level)	102