The differences between portable and external hard drives

In this computer-driven era, it can be difficult for some people to understand the subtle differences between what appear to be similar items. Although both portable and external hard drives seem to do the same thing, there are marked differences between them as they achieve their goals and their suitability for the user. Power supply
The power supply is the main difference between external and portable hard drives.
The main difference between portable and external hard drives is the power source. One is powered through a normal wall outlet and the other is powered through a cable to your computer or laptop. hard drives
External devices must have a normal power supply, as with any electrical product. They are then connected, usually via a USB connector, to the computer. This means you always need a place to plug it in. This might not be a problem at the office, but it will be if you’re on a plane or train.
Portable hard drives, as the name suggests, do not require an external power supply, but instead are powered when connected to a computer, again usually via a USB connection.

Size
Some portable hard drives have more capacity than a laptop.

As transport is not a vital factor, external hard drives tend to be larger than portable hard drives – both in terms of dimensions and storage capacity. However, as technology has advanced, some portable hard drives have surpassed the capabilities of most laptops.
In terms of storage capacity, most external hard drives take between 1 and 2 terabytes, and portable devices can range from a few hundred gigabytes, which can be mounted on a keychain, to 1 terabyte, which is roughly the size of a hardcover book.

Price
prices are linked to the store size, not the brand name.

As with storage size, the price can vary a lot. Smaller portable hard drives can be picked up for around $20 as of late 2010, but larger external hard drives can run several hundred dollars.
Although there are several brands available, price is more closely linked to storage capacity rather than brand name.
Conclusion
As technology has made devices smaller and more capable, the need for external hard drives has diminished. They are not as convenient as portable units of similar capacity that fit in your pocket and don’t need a power outlet.
However, if portability is not an issue, then additional storage space may be the key factor.

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