A portable external hard drive is a hard disk drive that is connected to the computer externally. Initially when computers were launched they had a hard disk that was external only. This was huge and was not fixed inside the computer. Then with technology revolution hard disks became sleek and compact and were fitted inside the computers. But these days people have become so much dependant on the computers that we need a bigger memory space.
Not only does an external hard drive act as a back up but ii also unburdens the load of the computers. When there are too many files on the computer the computer runs slow and if it crashes it becomes all the more troublesome to recover data. Therefore an external hard drive can be of great help. There are many modern entries into the market for a hard disk some of which are SATA, PATA or IDE.
A portable hard drive is very small and can be easily carried anywhere. But the small size does not mean that the memory is also small. Most external portable hard disks have memory of 25 GB or more. Therefore with such a big memory space we can easily fit in all our work, pictures, movies and games. Initially portable hard drives was used only in computers but now it is used in game consoles, cell phones, laptops, cameras and music players too so that we never run out of memory.
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