TYAN S5630 Manual page 107

Link Speed
Choose Link Speed for this PCIe port.
Auto / Gen 1 (2.5 GT/s) / Gen 2 (5 GT/s) / Gen 3 (8 GT/s)
PCI-E ASPM Support
This option enables/disables the ASPM (L1) support for the downstream devices.
Auto / L1 Only / Disabled
L0s Support
When disabled, IIO never puts its transmitter in L0s state.
Disabled / Enabled
5.5.5.2 Intel® VT for Directed I/O (VT-d)
Intel® VT for Directed I/O (VT-d)
Enable/Disable Intel® Virtualization Technology for Directed I/O (VT-d) by reporting
the I/O device assignment to VMM through DMAR ACPI Tables.
Enabled / Disabled
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