According to Linux-Hardware-Guide.com, this NIC requires a board that "supports the PCI 2.2 spezifikation, because the card can not be used on older mainboard which only support PCI 2.1 (or lower)." Can anyone confirm or refute this? I see no such hardware requirement in any specs for this NIC. I need to know as my Gigabyte motherboards are all 770, 790X, or 790FX chipsets, and so far as I can tell, only use the PCI 2.0. Thanks.