Shopping for hard disks? Okay, first, you have to consider is which interface the hard disk drive uses. There are three of them and this is the third:
External solutions galore! The most popular of course is the USB hard disk drive. However there are also Fire wire and Parallel Hard disk drives as alternative solutions. Basis for your choice should be the speed on how date is transferred from and to the hard disk drive and that you have the proper connection for a particular external drive.