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32 Chapter 3 BIOS Setup Utility
Primary/Secondary Master/Slave UltraDMA
Each IDE channel supports a master device and a slave device. This mainboard supports UltraDMA technology, which
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. The default setting is Auto.
IDE HDD Block Mode
Enable this field if the 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 improves the speed of access to IDE
devices. The default setting is Enabled.
Press <Esc> to return to the Integrated Peripherals menu.
VIA OnChip PCI Device
Use this item to enable or disable the PCI devices that are integrated on the mainboard. Select the item and press
<Enter> to open the following menu:
Figure 3.10 VIA OnChip PCI Device menu
VIA-3058 AC97 AUDIO
Enables and disables the onboard audio chip. Disable this item if you are going to install a PCI audio add-in card. The
default setting is Auto.
OnChip USB Controller
This item must be enabled to use the Universal Serial Bus ports on the mainboard. The default setting is All Enabled.
OnChip EHCI Controller
The onchip Enhanced Host Controller Interface (EHCI) driver allows USB 2.0 functionality.
USB Emulation
Set this field to choose the USB emulation. When set to “OFF”, do not support any USB device on DOS. When set to
“KB/MS”, support USB legacy keyboard and mouse, no support USB storage. And set to “ON”, support USB legacy
keyboard, mouse and storage.