Notion widens, creature's brain lacks competence for more. Then technology takes on, calling for modifications and change becomes imperative. Major cause for all transformations - capacity to store data. There are many new members in the storage world today with external storage ruling the roost, getting evermore sleeker and insanely portable - reaching your trouser pockets.

External hard drives can hold an enormous amount of data but are too heavy, and cannot be carried because they require their own power supply - but the latest innovation outpowers the lattice, being a solution for storage portability and performance. Available in large capacity these are pocketable and can be attached with the computers USB connection that means no need to carry an AC adapter.
There are many such USB powered portable hard drives in the market that are a new standard in convenience for nerds who need to back up and shift large amounts of data, but here let's take a little insight into three best pocket hard drives.
200GB USB 2.0 Portable Hard Drive by Toshiba

Toshiba has ruled notebook computers and internal mechanism, including hard drives for decades, but is a new member in the USB external hard drive market. Being a new acquaintance, Toshiba's best USB drive may not be as fast but surely makes up for it with its easy to use tact and portability. Embedded with touch-less automatic backup software, it has the highest capacity amidst its competitors, owing to which it is also the most costly.
HP Pocket Media Drive PD0800

If you have a HP PC with a compatible drive bay and are looking for a cartridge style hard drive, then your search ends here with the HP Pocket Media Drive PD0800 - that'll perfectly fit into that drive. For others, you needn't sham, you can connect it to the PC by a USB. HP sells 80GB drive while a 120GB hard drive is also available.
Western Digital Passport

Last in the company is a 160GB pocket drive from the Passport series of Western Digital protable hard drives. It's a ideal companion for your notebook - the mini data assembler is a reward for the ones who want that data but are lethargic in carrying the notebook, but its backup software may just be good for a normal day. However, the price is well paid back by the hefty storage capacity.
[Source: Pcmag]