• I bought one of these readers.

    It works great with 4GB cards.

    However, it does NOT work properly with 16GB Sandisk Extreme III and Kingston ElitePro cards.  It corrupts the card when you try to read from it.

    Putting the same CF cards in my non-UDMA Kingston 19-in-1 reader, I was able to read the same cards without a problem (except much slower because it is only USB 2.0 and not UDMA).