Intel S845WD1-E manual Legacy USB Support

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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.

18	Intel Server Board S845WD1-E Product Guide

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Contents Intel Server Board S845WD1-E Product Guide Disclaimer Contents Server Board Installation and Upgrading Configuration Software and UtilitiesSolving Bios Problems Regulatory and Integration Information TablesContents Vii Viii Server Board Features Server Board FeaturesFeature Description Back Panel Connectors Back Panel ConnectorsFront Panel Connectors HDD LEDServer Board Connector and Component Locations Server Board ComponentsMemory Supported Memory ConfigurationsProcessors Supported ProcessorsIntel 845E Chipset Intel 82845E Memory Controller Hub MCHController Intel 82801BA I/O Controller Hub ICH2Intel 82802AB Firmware Hub FWH Parallel Port Hardware Management SubsystemSerial Ports Diskette Drive ControllerFan Monitoring Real-Time Clock, Cmos SRAM, and BatteryHardware Management Asic Chassis Intrusion and DetectionLegacy USB Support Scsi Hard Drive Activity LED Connector IDE SupportIDE Interfaces PCI Auto Configuration PCI IDE SupportBios Updates Language SupportCustom Splash Screen Recovering Bios Data Boot Options CD-ROM and Network BootBooting Without Attached Devices Fast Booting Systems with Intel Rapid Bios Boot Intel Rapid Bios BootBios Security Passwords Supervisor and User Password FunctionsSystem Management Bios Smbios SmbiosPower Management Features Wake on LAN TechnologyWake on Ring Acpi Resume on RingSystem States and Power States Effects of Pressing the Power SwitchPower States and Targeted System Power Wake-up Devices and Events Wake-up Devices and EventsHardware Support Fan Connector Function/Operation Power ConnectorFan Connectors Connector DescriptionLocation of the Standby Power Indicator LED Instantly Available PC TechnologyWake from USB Wake from PS/2 DevicesPME# Wake-up Support PCI I/O Subsystem PCI Bus CharacteristicsPCI Bus Configuration IDs 32-bit, 33-MHz PCI SubsystemATA-100 PCI ArbitrationVideo Controller 3D Mode Refresh Rate HzVideo Mode Support with Z Buffer Enabled Video ModesNIC Connector and Status LEDs Network Interface Controller NICVideo Memory Interface Hardware Monitoring Intel Server Board S845WD1-E Product Guide Tools and Supplies Needed Before You BeginEmissions Disclaimer Intel Server Board S845WD1-E Product Guide Dimm Installation Guidelines Installing DIMMsMemory Removing DIMMs Dimm Socket LocationsInstalling the I/O Shield O Shield DimensionsInstalling the Server Board Location of the Mounting Screw HolesInstalling a Processor Installing the Processor in the Processor SocketAttaching the Fan Heat Sink Clips to the Processor Socket Removing the Processor Replacing the Battery PrécautionVaro Removing the Battery Connecting the IDE Cable Connecting the IDE CableSetting the Bios Configuration Jumper Jumper Settings for the Bios Setup Program ModesFunction/Mode Jumper Setting Configuration Updating the Bios with the Intel Express Bios Update Utility Preparing for the UpdateObtaining the Bios Update File Recording the Current Bios SettingsCreating Bootable Media Creating a Bootable Diskette Creating a Bios Update MediaUpdating the Bios Recovering the Bios Using the Setup Program Bios Setup Program ModesMaintenance Menu Maintenance MenuBios Setup Program Function Keys Bios Setup Program Function Key DescriptionExtended Configuration Submenu Extended Configuration SubmenuUswc ECC Main MenuMain Menu IoapicAdvanced Menu Advanced MenuPCI Configuration Submenu PCI Configuration SubmenuBoot Configuration Submenu Boot Configuration SubmenuPeripheral Configuration Submenu Peripheral Configuration SubmenuIRQ IRQ 7 default Auto defaultDefault Enabled DefaultIDE Configuration Submenu IDE Configuration SubmenuPrimary/Secondary IDE Master/Slave Submenus CD-ROMDiskette Configuration Submenu Diskette Configuration SubmenuEvent Log Configuration Submenu Event Log Configuration SubmenuVideo Configuration Submenu Video Configuration SubmenuPCI Security Menu Security MenuAcpi Submenu Power MenuPower Menu Acpi SubmenuBoot Menu Boot MenuBoot Device Priority Submenu Boot Device Priority SubmenuAtapi CD-ROM Hard Disk Drives Submenu Hard Disk Drives SubmenuRemovable Devices Submenu Removable Devices SubmenuAtapi Cdrom Drives Submenu Exit MenuAtapi Cdrom Drives Submenu Exit MenuIntel Server Board S845WD1-E Product Guide Bios Beep Codes Beep CodesNumber of Beeps Description Bios Error Messages Bios Error MessagesError Message Explanation Nvram / Cmos / Password Intel Server Board S845WD1-E Product Guide Asia-Pacific region World Wide Web TelephoneU.S. and Canada Europe JapanIntel Server Board S845WD1-E Product Guide Server Board Connectors Baseboard ConnectorsPower and Hardware Control Connectors Add-In Board and Peripheral Interface Connectors Add-in Board and Peripheral Interface ConnectorsDMA Channels Server Board ResourcesMemory Map System Memory MapMap O MapAddress hex Size Description Interrupts InterruptsAddress hex Description Onboard mouse port if present, else user available Product Safety Compliance Product Regulatory ComplianceProduct EMC Compliance Electromagnetic Compatibility Notices Product Regulatory Compliance MarkingsProduct Certification Markings Europe CE Declaration of Conformity Taiwan Declaration of ConformityInstallation Precautions Korean RRL ComplianceAustralia / New Zealand Place Battery Marking Installation RequirementsPrevent Power Supply Overload Use Only for Intended ApplicationsIntel Server Board S845WD1-E Product Guide