CinemaView recently launched the Duo, an adapter that allows the user to connect two Apple LED Cinema Displays using only one Mini DisplayPort output. The only condition is that the monitors are identical in both model and resolution.
CinemaView Duo reads the resolution data from the two displays and combines them into a large, horizontally extended virtual monitor, transmitting the new resolution to the Mac. A native 1920 × 1200 pixel, for example, will function as 3840 × 1200 pixels.
Unfortunately, the company already says that the adapter does not support MacBook / MacBooks Pro operation with the lid closed. The CinemaView Duo hits the market within a week, for $ 150.