USB Keyboard Support
Common Options : OS, BIOS
Quick Review
This BIOS feature determines if support for the USB keyboard should be provided by the operating system or the BIOS. Therefore, it will only affect those who are using USB keyboards.
If your operating system offers native support for USB keyboards, you should select the OS option. This will provide much greater functionality. However, if you are using DOS or operating systems that do not offer support for USB keyboards, then using the OS option will essentially disable the keyboard as these operating systems cannot 'detect' or work with USB keyboards.
This is where the BIOS option comes in. When selected, the BIOS will provide support for the USB keyboard. You will be able to use the keyboard with both operating systems that don't support USB keyboards and those that do.
However, the BIOS option offers only rudimentary support for the USB keyboard so using it will strip the keyboard of all except basic functions. Therefore, you should not select this option if you are using an operating system that supports USB keyboards. It is recommended that you select the OS option if you are using a current operating system like Windows XP.
But don't forget to switch from the OS option to the BIOS option whenever you want to boot up using a DOS boot disk. Even if the boot disk was created by a USB-aware operating system like Windows XP, it will not support the USB keyboard.
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