So you need a card with two USB headers in parallel rows like on a mobo? Not likely on an add-on card. One of the rows must be for an extra front panel USB jadk, so you'll probably have to do without that. OTOH, use the mobo headers for your card reader/front panel USB jack and use the card for your rear ports... Found plenty of NEC based PCI USB 2.0 cards on fleaBay at under $10. shipped. Both versions of the SIIG card has a single row of pins for one internal connectiaon. Adapter cables are available from places like frontx.com to go from a standard jack to pins, but that wont help much as I've not sen one that can merge two into one, two-row header. I think the OTOH is the way to go.
.bh.