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
.
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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.
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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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