Philips 200XW 20 inch WSXGA LCD Monitor Review
 

If you look really really close, you can see something slightly unusual, a USB type-B port. Now what is the point of this, you may ask? Does it send advanced messages to the computer? No, it's merely a passive USB connection for the USB socket on the side of the monitor. Being passive means it's just a direct electrical connection, so if you hook it up to a USB2 device, the monitor USB port is USB2, and if you go USB1, it's USB1. Maybe one day there'll be USB3 and then you can get really excited!

http://www.overclockersclub.com/reviews/philips_200xw