Chipset Configuration - ASROCK Z270M-STX MXM User Manual

4.6.2 Chipset Configuration

Primary Graphics Adapter
Select a primary VGA.
Top Of Lower Usable Dram
Maximum Value of TOLUD. Dynamic assignment would adjust TOLUD
automatically based on largest MMIO length of installed graphic controller.
VT-d
Intel® Virtualization Technology for Directed I/O helps your virtual machine
monitor better utilize hardware by improving application compatibility and
reliability, and providing additional levels of manageability, security, isolation, and
I/O performance.
PCIE1 Link Speed
Select the link speed for PCIE1.
PCI Express Native Control
Select Enable for enhanced PCI Express power saving in OS.
PCIE ASPM Support
This option enables/disables the ASPM support for all CPU downstream devices.
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