What are the considerations for purchasing a mobile hard drive

Considerations for purchasing a mobile hard drive.

　　First, the shell material

Nowadays, there are many kinds of mobile hard disk in the market, and the appearance is diverse, so don't be fooled by its fashionable and beautiful shell. The product that should be considered first is safe, consider appearance again. Now the metal shell of the mobile hard disk more see, metal texture is better, the appearance are done relatively small and beautiful, the opposite of the metal seismic performance is very poor.

When the hard drive falls, under the external impact, the metal shell will impact the force without any attenuation to the disk core of the mobile hard disk, which is the most vulnerable part of the mobile hard disk, the damage of the disk core is disastrous, all the data will be difficult to recover. It is recommended that you choose a shell that uses elastic plastic as a material, plastic texture does not have a good metal texture, but the plastic after the external impact, will occur elastic deformation, you can not underestimate this deformation, it will absorb a part of the impact, so that the force on the core to reduce a lot, so as to protect the disk core, Minimizes the chance of hard disk damage. Some more seismic measures are added inside the casing, and the safety performance will be further improved.

Second, transmission speed

At present, most of the mobile hard disk using the USB2.0 standard interface, USB2.0 theory of transmission speed is 480mb/s, because 1byte=8bit, the size of the file is often said Byte, the reason the USB2.0 transmission speed is 60mb/s, But the actual transmission is not up to this theoretical value, generally is between the 10mb/s―25mb/s. The main factors that affect transmission speed are the usbtoide chip, transmission line and PC in the mobile hard disk circuit board.

Good chips in the speed and stability of the chip is much better than the low price, some consumers bought labeled as USB2.0 interface of the mobile hard disk, can not be a very high speed, but not much faster than the USB1.1, is actually the manufacturer's choice of the chip in trouble. It is understood that "patriot" use of the Usbtoide chip is the famous Sepras chip, set high-speed stability in one. You can transfer more than 1GB of data per minute, so you don't have to wait for the transmission of large volumes of data.

Data cable is also a factor that can not be ignored, the USB shielding layer to do a good data line, so that the transmission is stable and fast, not by the surrounding signal interference. Also some consumers in the data transmission will occur without cause, this is the data line shielding does not do well, by the interference caused by the surrounding signals. In addition, the configuration of personal computers will also affect the speed and stability of data transmission.

　　Third, quality assurance

Products in the use of a variety of problems can be quickly and properly resolved also in the purchase of mobile hard drive need to consider carefully. The credibility of manufacturers directly affect the quality of after-sales service products. Now on the market there are many small manufacturers to open the mobile hard drive to sell, on the spot for you to assemble, the price is very cheap. Many consumers covet a moment of cheap actually bury the hidden danger.

First, the installation of a removable hard disk requires no dust, no static environment operation, and those on-site assembly shop simply can not meet these conditions, it is easy to produce static electricity, electrostatic will likely breakdown circuit board IC, even if not destroyed but also greatly reduce the life of the IC, these consumers are not aware of; The core of the purchase channel is unknown, there are a large proportion of the core is parallel imports of products, parallel imports are not to enjoy the warranty; third, the small factory after-sales service is not perfect, even there is no after-sales service, after the problem consumers do not know who to find a solution, to find people are also being put off like Buck kicked to kick to go without any Product quality without any monitoring, completely contrary to the consumer to buy a mobile hard drive security and stability of the original intention.

　Four, security article

Regardless of the purchase of any brand products, the last point to buy products, please look for the product's trademark, anti-counterfeiting identification, and to ask the dealer for formal invoices and three packs of cards. Avoid buying fakes, invoices and three packs of cards are the vouchers for future after-sale service.