Cannot See USB Controllers for VMDirectPath on AMD SP5100 Motherboard

Hi guys,

I am running ESXi 4.1 on a SuperMicro H8SGL-F. The motherboard is based on AMD chipset SR5650 + SP5100.

I have see on many other motherboards that their USB controllers are recorganized by the hypervisor for VMDirectPath passthrough.

But it doesn't happen to H8SGL-F. I can see the onboard NICs, onboard VGA, my addon Adaptec RAID card on the list. No USB controllers.

I am wondering is it the issue with the SP5100 chipset itself?

Regards,

Derrick