All computers have 1 hard drive where data is stored. Customarily, these are found internally but as PCs have evolved external drives are turning into a part of computers. They are really an external space for storing where sensitive data can be kept in a safe and protected environment and they are essentially used as backup drives.

Multimedia has changed into a part of any computer software and that takes up a lot of drive space. A portable external disk drive can look after all these requirements. External drives have their own enclosure case outside the PC and the case is conveyable though not much larger than the drive it contains.

The external drive is connected to the computer with a fast interface wire ; fire wire and USB are the commonest interface cables used. This wire is used to pass data from and to the external hard drive 1tb to the computer. The external hard drive can be operated as a plug-and-play machine. A USB or Firewire compatible computer can recognize the external drive as a space for storage by giving it a drive letter. The user can then access the external hard device like the usual internal drive. Because of its high storage space and portability, large sized files can easily be transferred to and from the office and home with the portable external disc drive simply by plugging in the interface cable. P. C|computer|personal computer} to the portable and vice versa. Thus, if it is office work which must be carried home, a working environment can be recreated by just the plug-and-play external hard drive or the user’s favourite programs can be simply carried to and from any place to the other. If many family members are using the same computer, a movable external drive comes in useful for storing sensitive data separately from the PC’s internal drive. All information and programs can be accessed by plugging in the external drive and then unplugging it and keeping it away after the work is done.
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