Large capacity.

Mobile hard disk mobile hard disk can provide considerable storage capacity, is a more cost-effective mobile storage products. In the case of large-capacity "flash drive" price is still only initially accepted by the user, mobile hard disk in the user can accept the price range, to provide users with larger storage capacity and good convenience.

The market for portable hard drives offers 320GB, 500GB, 600G, 640GB, 900GB, 1000GB (1TB), 1.5TB, 2TB, 2.5TB, 3TB, 3.5TB, 4TB, etc., with capacities up to 12TB, which can be said to be the upgraded version of flash memory products such as flash disks and disks and is widely accepted by the public.

Small size.

The size of the mobile hard disk (box) is divided into 1.8-inch, 2.5-inch and 3.5-inch three kinds.2.5-inch mobile hard disk box can be used with laptop hard disk, 2.5-inch mobile hard disk box is small in size and light in weight, easy to carry, and generally no external power supply.

The vast majority of mobile hard drives are USB interfaces, but because of the limited functionality of USB interfaces, the 2.5' hard drive used in mobile hard drives is actually not the same as the hard drive used in laptops.

Laptops require the hard drive to boot up quickly, so laptop hard drives have a higher boot current of about 900mA. The platters used in mobile hard drives take slightly longer to boot, and the starting current is smaller, usually around 700mA.

So if you assemble your own mobile hard drive, you still need to find a special mobile hard drive version of the platter core. 3.5-inch hard drive caddy using a desktop computer hard drive, the volume is larger, the portability is relatively poor. 3.5-inch hard drive caddy generally comes with an external power supply and cooling fan.

High speed.

Mobile hard disk mobile hard disk mostly use USB, IEEE1394, eSATA interface, can provide high data transfer speed. However, the data transfer speed of the mobile hard disk is still somewhat limited by the interface speed, especially in the USB1.1 interface specification of the product, in the transmission of a larger amount of data, will test the user's patience.

While USB2.0, IEEE1394, and eSATA mobile hard disk interfaces are relatively good. USB2.0 interface transfer rate is 60MB/s, USB3.0 interface transfer rate is 625MB/s IEEE1394 interface transfer rate is 50~100MB/s.

While exchanging data with the host computer, it will take only a few minutes for a large file to be read in a gigabyte.


Onboard Power and Reset buttons are accompanied by a LED Debug Display that puts users in the driving seat when experimenting with different hardware configurations.

Easy to use.

Mainstream PCs are basically equipped with a USB. portable hard disk function, the motherboard can usually provide two to eight USB ports, some monitors will also provide a USB adapter, USB interface has become a personal computer in the necessary interface.

USB devices in most versions of WINDOWS operating system, can not need to install the driver (windows 98 need), with a real "plug and play" characteristics, flexible and convenient to use.

But the high-capacity hard disk 160G or more (so the notebook general 160G is very high) due to the speed of up to 7200 rpm (notebooks more than 5400 rpm below), so the need for external power (USB power supply is insufficient). To a certain extent, this limits the portability of the hard disk (some notebooks provide enhanced power supply design, a USB port can provide up to 1A of current).

Increased reliability.

Data security has always been a major concern for mobile storage users, and an important criterion for people to measure the performance of such products. Mobile hard disk to high-speed, high-capacity, lightweight and convenient advantages to win the favor of many users, but the greater advantage also lies in the security and reliability of its stored data.

This type of hard disk is similar to the structure of the hard disk of the laptop computer, and most of them use silicon oxygen disk. This is a more robust and durable platter material than aluminum or magnetic, and offers greater storage capacity and better reliability, improving data integrity.

Disk drives that use silicone as a material feature smoother platters, effectively reducing the number of irregular platters that may affect data reliability and integrity, and higher platter hardness to make USB hard drives highly reliable. Also features anti-vibration function, the platters automatically stop spinning and reset the magnetic head to the safe zone in case of severe vibration. This prevents damage to the platters.