Summary: This product is indispensible to attach a USB 3.0 device to a Sony Vaio Z, but need additional external power so the aptop looses its portability while in use.
Summary: It does all it says and comes with a power cord!!! I've tried other USB 3.0 cards but returned them because of this reason you cannot use these cards with a portable HDD...
Summary: I had no problem setting this up and using it with my express card 34 slot. It is much faster than my usb 2.0 and I am very happy with this item.
Summary: i have an older DELL M-90 laptop. In '07 it was state of the art and kind of expensive. i've upgraded it a few times already and I wanted USB 3.0 speed for a 2 gig WD...
Summary: I use this on my Dell Studio XPS and a Seagate FreeAgent GoFlex Pro 750 GB USB 2.0 Ultra-Portable External Hard Drive STAD750101 (Black) and a Seagate FreeAgent GoFlex