DisplayLink's USB graphics technology has made adding multiple screens to notebooks straightforward, but there's always a limit on performance thanks to the throughput potential of USB 2.0. Unsurprisingly, then, the latest breed of USB display adapters, such as Sunix's imminent VGA2788, turn to USB 3.0 to allow for Full HD 1080p support.
In fact, it will go all the way up to 2048 x 1152 resolution, and demands just 400mA. Output is via a single HDMI port, and you can either mirror or extend your existing desktop. Up to four VGA2788 units can be used at any one time (assuming your computer's CPU can keep up).
It's backward compatible with USB 2.0, of course, though you'll probably lose some pixels in the process. No word on pricing or availability at this stage.
[via Everything USB]