User`s manual
BIOS  Setup
Integrated Peripherals
OnChip IDE Device 
IDE Primary Master/Slave PIO
The IDE PIO (Programmed Input/Output) fields let you set a PIO mode for the
IDE devices that the onboard IDE interface supports. Modes 0 through 4 
provide successively increased performance. In [Auto] mode, the system 
automatically determines the best mode for each device.
IDE Primary Master/Slave UDMA
Ultra DMA 33/66/100 implementation is possible only if your IDE hard drive 
supports it and the operating environment includes a DMA driver (Windows 
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