Silverstone EC02.
USB 3.0 Slim ExpressCard Adapter.
ExpressCard/34 (34mm).
USB 3.0(5.0 Gb/s), USB 2.0(480Mb/s), USB 1.1(12Mb/s) fully appropriate.
75mm(L) x 34mm(W) x 5mm(T).
http://silverstonetek.com/product.php?pid=307&area=en.
Uses the well assisted as well as largely made use of NEC uPD720200 chipset. Great in Windows, terrific in UNIX.
In best working health condition, comes with cable television for powered USB 3.0 drives (ExpressCard can not attract sufficient power on it's very own for things like exterior hard disk drives).
$15, for pickup in Burlington L7M3E6.