North Bridge Configuration - ASROCK X79 Extreme6/GB User Manual

3.4.2 North Bridge Configuration

Primary Graphics Adapter
This allows you to select the boot graphic adapter priority. The default
value is [PCI Express].
PCIE 1 Link Speed
This allows you to select PCIE 1 Link Speed. The default value is [GEN2].
PCIE 3 Link Speed
This allows you to select PCIE 3 Link Speed. The default value is [GEN2].
PCIE 4 Link Speed
This allows you to select PCIE 4 Link Speed. The default value is [GEN2].
PCIE 4 Link Width
This allows you to select PCIE 4 Link Width. The default value is [x8].
Intel(R) VT for Directed I/O Configuration
Intel(R) VT-d
Use this item to enable/disable Intel(R) Virtualization Technology for
Directed I/O.
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