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USB Keyboard Support
Select Enabled if your system contains a Universal Serial Bus (USB)
controller and you have a USB keyboard.
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The Choice: Enabled or Disabled.
USB Mouse Support
Enable this item if you plan to use a keyboard connected through the
USB port in a legacy operating system (such as DOS) that does not
support Plug and Play.
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The Choice: Enabled or Disabled.
IDE HDD Block Mode
Block mode is also called block transfer, multiple commands, or mul-
tiple sector read/write. If your IDE hard drive supports block mode
(most new drives do), select Enabled for automatic detection of the
optimal number of block read/write per sector the drive can support.
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The choice: Enabled or Disabled