We have X10DRi-T onhand, found that there are IOU0, IOU1 and IOU2 function in BIOS, is that means it's PCIe bifurcation function was enabled ? What's the defination ?
No, the PCIe bifurcation function on X10DRi-T still required riser card support.
Please refer the following definition:
IOU2 (IIO PCIe Port 1)
This item configures the PCI-E port Bifurcation setting for a PCI-E port specified by the user. The options are x4x4, x8, and Auto.
IOU0 (IIO PCIe Port 2)
This item configures the PCI-E port Bifurcation setting for a PCI-E port specified by the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and Auto.
IOU1 (IIO PCIe Port 3)
This item configures the PCI-E port Bifurcation setting for a PCI-E port specified by the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and Auto.