For me no success.

Adding ATI 7790 card to VM as PCI device is ok, but when i try to passthru onboard USB or onboard audio it throws a "PCI passthrough device ID (0x-73d3) is invalid." error on me (in web client). VM is win 8, vm version 10 with EFI boot.

Before when i tried it with classic client, it could be added but onboard usb in win 8 (vm version 8, bios boot) ended in code 10 error and exclamation mark. Onboard audio and GPU worked.

Host is a i5-4560 whitebox, Asrock z87 extreme 4 board.