Been fretting over the upcoming slew of USB 3.0 devices and your relatively new laptop's inability to exploit their full speed? Well this isn't going to help you much, but it's a great example of why you should shop with a careful eye and preferably from reputable stores. British e-tailer StarTech.com (no, we haven't heard of them before either) is now offering an ExpressCard-based USB 3.0 adapter for £39 (about $64), which s