If you consider the types we have 1TB, 2TB, 3TB and 4TB types in the variety at best price. Historically more than 200 companies have been producing these device, among those prominent brands are Western Digital, Toshiba, Transcend, Seagate and Adata. Upgrade to the Latest Portable HDD for Your On-The-GO Drive from Brands like Western Digital, Seagate, ADATA, and More Over the passage of time it improves and in March 2015 it achieved the capacity volume from 500GB to 1TB. The concept of secondary storage was first introduced by IBM in the year of 1956. These are available in two different sizes variants, 2.5-inch are typically known as portable external hard drives and 3.5-inch are known as desktop external drives. Portable or external hard disk drives are dominant secondary storage devices for storing digital information that is usually pre-assembled or assembled by combining an external enclosure. Purchase Portable Hard Drives at Best Price in Bangladesh
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