Elite Bastards posted a review on the StarTech 2-port PCI Express USB 3.0 controller
Perhaps unsurprisingly, the first thing we can see if just how diminutive this controller card is, fitting into the length you'd expect of a PCI Express 2.0 1x card perfectly, with the board supporting both PCI Express 2.0 and 1.1 while also serving to act as a half-height card when equipped with the correct mounting bracket.StarTech 2-port PCI Express USB 3.0 controller review
At the heart of this device is the same NEC chip seen on most of the motherboards which have added USB 3.0 support to their specification, with this chip supporting two devices as per the specification of the card itself.
Additional power is required via a single four-pin Molex connector attached to the rear of the card - This allows the device to provide juice to powered USB devices, to the tune of 900 mA per port.
