CHAINTECH 7AIA5, Manual

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User's Manual
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C. OnChip USB
Enable the on-board Universal Serial Bus (USB) controller if you want to connect
a USB keyboard to your system. Note that if this setting is disabled, you can
still temporarily use a USB keyboard during bootup so that you can enter BIOS
and enable this setting. If you pass the bootup stage without enabling this
function, your PS/2 keyboard will no longer work.
D. USB Keyboard Support
Select Enabled if your system has a USB keyboard installed on the system board.
If your system has no USB keyboard, select Disabled in this field.
E. Case Open Warning
This board supports the case open warning(chassis instruction monitoring) feature
of the management extension hardware by means of a mechanical or photo sensor
switch attached to the motherboard through this 1x3-pin chassis security header.
The mechanical switch is set to open for normal computer operation. Select enabled
to use this function.
F. IDE HDD Block Mode
Block mode is also called block transfer, multiple commands, or multiple 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/writes
per sector the drive can support.
G. Onboard FDC Controller
Select Enabled if your system has a floppy disk controller (FDC) installed on
the system board and you wish to use it. If you install an add-in FDC or the
system has no floppy drive, select Disabled in this field.
H. UART 2 Mode
This function allows you to select an operating mode for the second serial port.
(Standard RS-232C serial port/HPSIR 1.0 specification/ASKIR 0.57-MB/sec
infrared port)
I. Onboard Parallel Port
Select a logical LPT port address and corresponding interrupt for the physical
parallel port.
J. Parallel Port Mode
Select an operating mode for the onboard parallel (printer) port. Select
SPP unless you are certain your hardware and software support one of the other
available modes.