Sabrent CRW-EXT 6-Slot All-in-One Card Reader
Got this card reader on the cheep at my local frys about 5.00 USD seems to use a Alcor Micro Corp. AU6477 Card Reader Controller. and works right out if the box on the Pi.
here is more info on the reader.
http://sabrent.com/category/accesories/CRW-EXT/