Intel S845WD1-E Manuel d'utilisateur Page 18
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18 Intel Server Board S845WD1-E Product Guide
Legacy USB Support
Legacy USB support enables USB devices such as keyboard, mice, and hubs 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. By default, Legacy
USB support is set to Enabled.
The S845WD1-E server board has four USB 1.1 ports; one USB peripheral can be connected to
each port. For more than four USB devices, an external hub can be connected to any of the ports.
Two of the USB ports are implemented with stacked back panel connectors; the other two are
accessible via the front panel USB header. The S845WD1-E server board fully supports UHCI and
uses UHCI-compatible software drivers.
✏
NOTE
Computer systems that have an unshielded cable attached to a USB port may
not meet FCC Class B requirements, even if no device is attached to the
cable. Use shielded cable that meets the requirements for full-speed devices.
Legacy USB support operates as follows:
1. When the user applies power to the computer, legacy support is disabled.
2. POST begins.
3. Legacy USB support is enabled by the BIOS allowing the user 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 keyboard and mice are
recognized and may be used to configure the operating system. (Keyboard and mice are not
recognized during this period if Legacy USB support was set to Disabled in the BIOS Setup
program.)
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, verify that Legacy USB support in the BIOS
Setup program is set to Enabled and follow the operating system’s installation instructions.
✏
NOTE
Legacy USB support is for keyboard, mice, and hubs only. Other USB
devices are not supported in legacy mode.
- Server Board S845WD1-E 1
- Product Guide 1
- Disclaimer 2
- 2002 Intel Corporation 2
- Contents 3
- Contents v 5
- Figures 6
- Contents vii 7
- 1 Description 9
- Back Panel Connectors 10
- Front Panel Connectors 11
- Processors 13
- Intel 845E Chipset 14
- I/O Controller 15
- Diskette Drive Controller 16
- Keyboard and Mouse Interface 16
- Serial Ports 16
- Parallel Port 16
- ✏ NOTE 17
- Legacy USB Support 18
- PCI Auto Configuration 20
- PCI IDE Support 20
- BIOS Updates 21
- Recovering BIOS Data 22
- Boot Options 23
- Intel Rapid BIOS Boot 24
- BIOS Security Passwords 25
- Power Management Features 27
- Resume on Ring 28
- (Note 1) 29
- (Note 2) 29
- Wake-up Devices and Events 30
- Hardware Support 31
- Power Connector 32
- Fan Connectors 32
- LAN Wake Capabilities 32
- CAUTION 33
- Wake from USB 34
- Wake from PS/2 Devices 34
- PME# Wake-up Support 34
- PCI I/O Subsystem 35
- ATA-100 36
- Video Controller 37
- Video Memory Interface 38
- Hardware Monitoring 39
- Tools and Supplies Needed 41
- Before You Begin 41
- Warnings and Cautions 41
- DIMM Installation Guidelines 43
- Installing DIMMs 43
- Removing DIMMs 44
- Installing the I/O Shield 45
- Installing the Server Board 46
- Installing a Processor 47
- Removing the Processor 49
- Replacing the Battery 50
- WAARSCHUWING 51
- Connecting the IDE Cable 53
- Utility 55
- Creating Bootable Media 56
- Creating a Bootable Diskette 57
- Creating a BIOS Update Media 57
- Updating the BIOS 58
- Recovering the BIOS 59
- Using the Setup Program 60
- Maintenance Menu 61
- Maintenance 62
- Extended Configuration 62
- Main Menu 63
- Advanced Menu 64
- PCI Configuration Submenu 65
- Boot Configuration Submenu 66
- IDE Configuration Submenu 69
- Video Configuration Submenu 73
- Security Menu 74
- Power Menu 75
- Boot Menu 76
- Boot Device Priority Submenu 77
- Hard Disk Drives Submenu 78
- Removable Devices Submenu 78
- Exit Menu 79
- 4 Solving BIOS Problems 81
- BIOS Error Messages 82
- 5 Getting Help 85
- Server Board Connectors 87
- Server Board Resources 89
- I/O Map 90
- Interrupts 91
- Notes: 92
- Product Safety Compliance 93
- Product EMC Compliance 93
- FCC (USA) 94
- INDUSTRY CANADA (ICES-003) 95
- Installation Precautions 96
- Installation Requirements 97
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