I had the same issue with my ASUS B85M-G (bios version 0604). It works for me with: Intel xHCI Mode = Disabled EHCI Hand-off = Disabled I'll add that my integrated NIC (Realtek 8111G is not supported by FreeNAS 9.1.1 - I was sure I read somewhere that it should work. Looks like I get to go learn about how to install the driver manually.. "Yay".) EDIT: If anyone finds this comment on account of the Realtek 8111G on FreeNAS 9.1.1, my little micro-guide explaining how to get it working is located here.