Chapter 4 |
| BIOS Setup Description | ||
USB Configuration Submenu |
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| Feature | Options | Description |
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| USB Functions | Disabled | Disable |
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| 2 USB Ports | Enable UHCI host controller 0. |
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| 4 USB Ports | Enable UHCI host controller 0 + 1. |
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| 6 USB Ports | Enable UHCI host controller 0 + 1 + 2. |
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| 8 USB Ports | Enable UHCI host controller 0 + 1 + 2 + 3. |
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| USB 2.0 Controller | Enabled | Enable the |
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| Disabled |
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| Legacy USB Support | Disabled | Legacy USB Support refers to the USB keyboard, USB |
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| Enabled | mouse and USB mass storage device support. |
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| Auto | If this option is Disabled, any attached USB device will not |
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| become available until a USB compatible operating system |
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| is booted. However, legacy support for USB keyboard will |
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| be present during POST. |
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| When this option is Enabled, those USB devices can |
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| control the system even when there is no USB driver |
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| loaded. |
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| AUTO disables legacy support if no USB devices are |
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| connected. |
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| USB Keyboard Legacy | Disabled | Enable/Disable USB keyboard legacy support. |
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| Support | Enabled | NOTE: This option has to be used with caution. If the |
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| system is equipped with USB keyboard only, the user |
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| cannot enter setup to enable the option back. |
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| USB Mouse Legacy | Disabled | Enable/Disable USB mouse legacy support. |
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| Support | Enabled |
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| USB Storage Device | Disabled | Enable/Disable USB mass storage device support. |
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| Support | Enabled |
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| Port 64/60 Emulation | Disabled | Enable/Disable the “Port 6h/64h” trapping option. Port |
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| Enabled | 60h/64h trapping allows the BIOS to provide full PS/2 |
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| based legacy support for USB keyboard and mouse. It |
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| provides the PS/2 functionalities like keyboard lock, |
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| password setting, scan code selection etc. to USB |
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| keyboards. |
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| USB 2.0 Controller | FullSpeed | Configures the USB 2.0 host controller in HiSpeed |
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| Mode | HiSpeed | (480Mbps) or FullSpeed (12Mbps). |
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| BIOS EHCI | Disabled | Enable workaround for OSs without EHCI |
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| Enabled | support. |
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| USB Beep Message | Disabled | Enable/Disable the beep during USB device enumeration. |
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| Enabled |
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| USB Stick Default | Auto | Select default USB stick emulation type. Auto selects |
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| Emulation | Hard Disk | floppy or hard disk emulation based on the storage size of |
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| the USB stick, but the emulation type can be manually |
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| reconfigured for each device using the Mass Storage |
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| Device Configuration sub menu. |
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70 | Reference Manual | COM 830 |
