March Products 120 III (PC620) User Manual
Page 100
User Manual version 2503
LIBRA 120 III (PC620 Intel 815E)
5-90
u INTERNAL PCI/IDE
This chipset contains an internal PCI IDE interface to support
two IDE channels.
The choice: Primary, Secondary or Both.
u IDE PRIMARY MASTER/SLAVE PIO
The four IDE PIO (Programmed Input/Output) fields let you
set a PIO mode (0-4) for each of the four 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.
The choice: Auto, Mode 0, Mode 1, Mode 2, Mode 3 or Mode 4.
u PRIMARY MASTER/SLAVE ULTRA DMA
UDMA (Ultra DMA) is a DMA data transfer protocol that
utilizes ATA commands and the ATA bus to allow DMA
commands to transfer data at a maximum burst rate of 33
MB/s. When you select Auto in the four IDE UDMA fields (for
interface supports), the system automatically determines the
optimal data transfer rate for each IDE device.
The choice: Auto or Disabled.
u USB CONTROLLER
Select Enabled if your system contains a Universal Serial Bus
(USB) controller and you have USB peripherals.
The choice: Enabled or Disabled.
u USB 2.0 CONTROLLER
Select Enabled if your system is using with a USB 2.0 devices
The choice: Enabled or Disabled.
u USB KEYBOARD SUPPORT
Select Enable if your system contains a Universal Serial Bus
(USB) controller and you have a USB keyboard.
The choice: Enabled or Disabled.
u AC97 AUDIO
Select Auto to support AC97 Audio.
The choice: Auto or Disabled.
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