How do i connect three external monitors to a macbook pro?

How do I connect three extrenal monitors to my Macbook Pro?

I have a USB to DVI adapter from kensington. I use to use it to power at 14" display.Moving windows around had some tearing and lag. Typing lagged, but it was use-able. It was fine for displaying diffrent stats. The OS treated it as it would any additional display.
But I found it undesirable for any thing tha requires lots dragging and clicking.
Every so often the device would lock up. At witch point the computer would get stuck trying to detect the USB display. I would have to unplug the adapter, cycle the power on the adapter. And then it would be good for a couple more months.
Also some times after a reboot, the adapter would stop working. I would have to unplug it, and login, and then plug it back in.
Coping file to my USB 2 harddrive seemed to cause more lag to the USB to Video Adapter.
About the idea of dasiy chaining 3 Thunderbolt display tgeother. Apple Thunderbolt Display (27-inch): Connection options for Thunderbolt Macs states the most the current MacBook Pro 15 & 17 inch can currently drive is 2 Apple Thunderbolt Displays.

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