Aaeon SBC-556/L, Руководство пользователя

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Chapter 3 Award BIOS Setup 67
Internal PCI/IDE
You can choose Disable to terminate the onboard PCI/IDE
controller and then support external HDD devices. When the
setting is Primary, users can set up IDE Mode or UltraDMA mode
depending on the respective HDD drive.
IDE Primary Master/Slave PIO
These four lines set the hard disk PIO transfer mode, which
affects the hard disk data transfer rate. The system will auto-
detect the PIO mode of a device in any of these positions when
they are set to 'Auto', the recommended setting. Alternatively,
you can set the mode manually. Modes 0 to 4 are supported.
Primary Master/Slave UltraDMA
These four lines enable hard disk UltraDMA transfer mode, which
requires a drive that supports this data transfer method. The
system will auto-detect an UltraDMA device in any of these four
positions when they are set to 'Auto', the recommended setting.
The other setting is 'Disabled'. You can leave these setting on
Auto if there are no UltraDMA devices installed.