OK, as long as you are sure it is a prism 2 based chip.
There apparently are a few models/revisions of this card.
See the link that I found from yours on the subject
here. Note section 4 on identifying the chipset by the FCC ID number.
Try inserting the card before you boot up. I have no idea if hotplugging this catd works.
What methods have you tried to get it working, or how do you know that it is not detected?