There are two ways to tell if you have a modified card.1) The new cards will have a different part number on them, "91500005365-01". (However, since PT AV has just been released, it is possible that you may have received a modified card without the new serial number label.)2) To determine whether a card has been physically modified, examine location U61, on the front of the card near the edge connector. If there is an IC installed, your card has NOT been modified. If there is a jumper across two pins (2 & 8) at U61, your card has the modification.