TV and monitor maker AOC has just introduced a new mobile display, the USB Monitor. Meant to act as a secondary display for notebooks, it uses a single USB cable to send the video signal and power it even with its size. The 15.6-inch e1649fwu has a 1366x768 resolution, a claimed and unusually high 50,000,000:1 dynamic contrast ratio, and a 5ms pixel response time.