|You might want to try a different Molex connector, but it does appear to be a bad card. If it was just the drive was not recognized, it might have been a driver issue, but the interference is a bad component on the board. Return it for replacement.|
You might want to Google the make and model of the card to see if there is a trend with that card, if it is, you might want to try a different card this time. If not, then it probably is just a bad one.
You have to be a little bit crazy to keep you from going insane.