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By default the BIOS enables this feature. What are the advantages of doing so?

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2 Answers 2

This link is admittedly very old, but i can not imagine that the function in the BIOS has changed much. Essentially what the Legacy USB Support in the BIOS does is emulate USB Keyboards and Mice as PS/2 compatible devices, enabling operating systems which are not USB aware to accept them as input devices.

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So if I use an OS that doesn't need that, I'll be good without it, right? –  Jader Dias Nov 4 '10 at 17:26
    
for any modern OS i would imagine so. why do you want to disable it? –  Xantec Nov 4 '10 at 17:28
    
faster boots –  Jader Dias Nov 4 '10 at 17:34
up vote 0 down vote accepted

Disabling it made the USB boot to stop working

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Ah, i was just going to point you to: USB Keyboard won't work after Post but before OS loads –  Xantec Nov 8 '10 at 13:42

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