North Bridge Configuration - ASROCK FM2A88X-ITX User Manual

4.4.2 North Bridge Configuration

IOMMU
This allows you to enable or disable IOMMU support.
Primary Graphics Adapter
This item will switch the PCI Bus scanning order while searching for video
card. It allows you to select the type of Primary VGA in case of multiple
video controllers. The default value of this feature is [PCI Express]. Con-
figuration options: [Onboard] and [PCI Express].
Share Memory
This allows you to set the share memory feature. The default value is [Auto].
Configuration options: [Auto], [32MB], [64MB], [128MB], [256MB] [512MB],
[1GB] and [2GB].
Onboard HDMI HD Audio
This allows you to enable or disable the "Onboard HDMI HD Audio" fea-
ture.
Dual Graphics
This item appears only when you install AMD RADEON graphics card on
this motherboard. Use this to enable or disable Dual Graphics feature. If
you enable this option, the primary monitor will be onboard VGA. If you se-
lect [Auto], Dual Graphics function will be automatically enabled when you
install AMD RADEON graphics card. The default value is [Auto].
DVI Function
Use this to select DVI function when you install the DVI to HDMI adapter
to DVI port. Configuration options: [as Dual Link DVI] and [as HDMI]. If you
select [as Dual Link DVI], you can use Dual Link DVI monitor without au-
dio function. If you select [as HDMI], you can use HDMI monitor with audio
function. The default value is [as Dual Link DVI].
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