User`s manual

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IDE Primary/Secondary Master/Slave PIO Default: Auto
Each IDE channel supports a master device and a slave device. These
four items let you assign which kind of PIO (Programmed Input/Output)
is used by IDE devices. You can choose Auto, to let the system auto
detect which PIO mode is best, or you can install a PIO mode from 0-4.
IDE Primary/Secondary Master/Slave UDMA Default: Auto
Each IDE channel supports a master device and a slave device. This
mainboard supports UltraDMA. UltraDMA technology provides faster
access to IDE devices.
If you install a device that supports UltraDMA, change the appropriate
item on this list to Auto. You may have to install the UltraDMA driver
supplied with this mainboard in order to use an UltraDMA device.
Init Display First Default: PCI Slot
Use this item to define if your graphics adapter is installed in one of the
PCI slots or select Onboard if you have a graphics system integrated on
the mainboard.
IDE HDD Block Mode Default: Enabled
Enable this field if your IDE hard drive supports block mode. Block
mode enables BIOS to automatically detect the optimal number of block
read and writes per sector that the drive can support and can improve
the speed of access to IDE devices.
Onboard FDD Controller Default: Enabled
This option enables the onboard floppy disk drive controller.
Onboard Serial Port 1/Serial Port 2 Default: Auto
These options are used to assign the I/O addresses for the two onboard
serial ports.