About External Hard Disk
Features of expanding mobile hard disks
First, high-speed transmission
The expansion mobile hard disk generally uses high-speed interfaces such as USB3.0 or USB3.1, and the transmission speed is much faster than that of USB2.0, allowing users to complete the transmission of a large amount of data in a very short time.
Second, strong flexibility
Expansion mobile hard disks generally use 2.5-inch or 3.5-inch hard disks, which have a large capacity and can store a large amount of data. At the same time, it can also remove and replace the hard disk, so that the user's data storage becomes more flexible and convenient.
Third, safe and reliable
Expansion mobile hard disk is generally equipped with data encryption function, can effectively protect the user's data security. In addition, some high-end expansion mobile hard disks also have shock-proof, waterproof, dust-proof and other functions to ensure the stability and reliability of the hard disk in adverse environments.
Four, easy to carry
Expansion mobile hard disk compact size, light weight, very suitable for users to carry. Users can put it in their pockets or carry-on bags, greatly facilitating users' data storage and backup needs.
In general, the expansion mobile hard disk has the characteristics of high-speed transmission, strong flexibility, safety and reliability, convenient portability, etc. It is a very practical data storage and backup device, which can effectively meet the needs of users' work and life.
The difference between external hard disks and portable hard disks
External hard disks and mobile hard disks have significant differences in appearance, interface, capacity, use, performance, price and so on. Here are the details: 12
Appearance. The external hard disk usually contains a hard disk, a conversion circuit board and a housing, which is large and heavy, and needs to be plugged into a power switch to use, while the mobile hard disk is usually a small platter, lightweight and easy to carry.
Interface. External hard disk interface variety, including USB 2.0, USB 3.0, lightning, etc., can support multiple computers at the same time, mobile hard disk is generally equipped with a single USB interface, suitable for connecting laptops, tablets and other devices for data backup and transmission.
Capacity. The capacity of the external hard disk is usually large, ranging from 1TB to 8TB, suitable for storing a large amount of data and files, in contrast, the capacity of the mobile hard disk is small, generally within 100GB, high-end products can reach 2TB, suitable for storing common files and data.
Use. External hard disks are suitable for occasions that require a lot of storage space, such as designers, photographers, music producers, etc., while mobile hard disks are suitable for users who need to frequently back up data and transfer data between different devices, such as students, teachers, white-collar workers, etc.
Performance. Mobile hard disks usually use mechanical hard disks with low speed and low energy consumption. Considering portability, the read/write speed and transfer speed are relatively slow. External hard disks can choose higher speed and cache capacity because they do not need to consider portability, and are suitable for scenarios that require high read/write speed and data transfer rate.
The price. External hard disk due to large capacity, high performance requirements, the price is relatively high, mobile hard disk due to small capacity, the price is relatively cheap.
Durability. Because mobile hard disks contain mechanical parts, they are more vulnerable to physical shock and vibration, and are relatively fragile, while solid state drives are more durable because they have no mechanical parts.
Application scenarios vary. External hard disks are suitable for storage expansion on desktop or laptop computers, and portable hard disks are more suitable for carrying around and data backup.
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