"The era of USB devices is upon us. Motherboards provide us with only 2 USB ports while many of us have many more devices utilizing a USB interface. When you have outgrown the two ports on your motherboard, it is time to step up to a USB hub. In addition to mere multiple port hubs, we are now fortunate enough to have multi-function hubs. These hubs can provide the user with serial, parallel, and now ps2 ports all stemming from those two ports on every modern day motherboard."
FULL STORY @ HARDWARE-UNLIMITED (http://www.hardware-unlimited.com/articles/usbhubroundup/)