Multiple monitors on Mac without additional display card or DVI port

Since i got my aluminium uni-body MacBook last year, i always connect it with my external LCD monitor to extend my work space via Mini Display DVI port with optional purchase Mini-display DVI  cable, which is cost me around RM90 (if im not wrong) .

Multiple monitors solution?

But what if you want to extend it more than one monitor? From my experience and knowledge, to extend multiple monitors you need to purchase an additional display card (For Mac Pro), but MacBook is not possible to add-on additional display card, then what to do? There is no dual DIV-Out cable in the market right now. Even it is, the respond time very slow and if you try to watch movie or work on some animation work, you will see how bad the result it is.

Well, there are lots of USB to DVI external box available on the market, i heard many of them have a negative feedback, is either framerate reponds time too slow cause the thing look jerky or not support sleep mode etc.

Until today i saw this from Tuaw, The ViBook, additional displays via USB , which allow you to use USB port to extend your display. And seems like quite promosing if you watch the video demo.

The ViBook is cost EURO 129, around MYR 600. Which is quite expensive for Malaysian. But if you definitely need it to extend more than one LCD display, then you may need this

More info, check from their official website. http://www.vibook.it/eng/index.html