Several months ago I was running ESXi 5.0 and had no issues setting the USB ports on the host computer to be available via the DirectPath I/O configuration for assignment to a specific virtual machine. Since I upgraded to 5.1 and subsequently to 5.1 update 1. Since the update I have not been able to have the usb ports on the host set up dor direct access by the virtual machines. When I go to the configuration tab under advanced settings for the host and hit edit, I can select both usb controller #1 and #2 and they get added to the list but require reboot before the change takes effect. Upon rebooting the host the usb controllers are not seen in the list and are not shown to be available to any of the virtual machines. Does anyone have any insight as to why it may have worked before the upgrade from 5.0 to 5.1 update 1 but not anymore?
system:
ESXi 5.1.0 build 1065491
Mobo: Supermicro X9SCI/X9SCA
CPU: Intel Xeon CPU E31270 @3.40GHz
1 socket
4 cores
8 logical processors
DirectPath I/O: Supported
Thanks,
Ken