This is a handy device to make Cd's and store huge amounts of data. (Kinda like exists on these web pages)  Usb (universal serial bus) is a simple way to plug this drive into all of our many computers.  Unlike a regular computer component, this will most likely stay with us and be appreciated as we inevitably upgrade and change computers.   

A popular unit is  the Zip by Iomega  USB CDRW external