What hardware needed for multiple monitors (3) on a 2009 MacBook Pro 5,5 with displayport (NVIDIA GeForce 9400M video card)

Solution 1:

A new product has been announced today about this. On the Windows side, the Matrox DualHead/TripleHead were common, but not available for Mac.

That has recently changed because Matrox Introduces New Mac-Friendly DualHead2Go DP and TripleHead2Go DP Multi-Monitor Adapters.

Solution 2:

I use a USB to DVI adapter based on the DisplayPort line of products with my MacBook Pro (2007 running Snow Leopard 10.6). Overall, I am quite happy with it however there are a few things you should note:

  1. It does not support hardware acceleration so certain programs, such as iMovie, will refuse to launch when the device is plugged into your computer. iMovie is the only program that I have come across that is affected but I mainly do web development and work in PhotoShop.
  2. At this time, the DisplayPort drivers do not support color profiles. Your only option for color calibrating your monitor will be whatever manual controls your monitor comes with. It's not a deal breaker for me as I mainly edit text but if you are color correcting photos it could be a problem.
  3. Small youtube videos play pretty well but you won't want to use the monitor for anything like fullscreen playback. It will work, but the results will be pretty choppy.
  4. Make sure you are on a USB2 hub or directly plugged into a USB port on your machine. It won't run over anything slower.

You can find a link to my preferred vendor here, though any product with Mac Drivers based on the newer chipset (resolution higher than 1080p) will work:

http://eshop.macsales.com/item/Newer%20Technology/VIDU2DVIA/

Don't buy an adapter that uses DisplayPort if it does not specifically say it will work on a Mac. I did so assuming I could use the generic drivers and they did not work.