If you have run out of USB ports on your computer or you want to increase the number of ports easily accessible, look into getting a USB hub. These are an effective and cheap alternative to buying additional USB PCI cards for your computer.
I haveÂ been using one of these instead of the front USB ports on my machine for several months now and love the flexibility they offer. You can move them anywhere you like without having to move your PCÂ and with the aid of some double sided tape, you can be quite creative with your placement.
Typically, a USB hub is installed by running a USB cable from the back of the hub to a USB port on your computer and then there is an AC adapter which needs to be plugged in. Additional software or drivers are usually not needed (I have 2 and neither require drivers).
For your convenience, here is NewEgg search which lists available USB hubs.