In addition, if you want to buy a mobile hard disk, you can refer to the following instructions.
First of all, clarify a misunderstanding, bulk notebook hard disk+hard disk box ≠ mobile hard disk! So far, there are only five manufacturers of large-capacity notebook hard disks: Hitachi, Toshiba, Fujitsu, Seagate and Samsung. Its performance gap is not very big. The mobile hard disk mentioned here, compared with the combination of bulk notebook hard disk and hard disk box, has seven major differences:
With "0 Ω resistance" data protection circuit, it can automatically cut off the circuit in case of overcurrent or overload.
It has patented technology of "low voltage startup" to prevent the hard disk from being damaged due to insufficient power supply of USB interface.
After long-term online tests such as "overload", "fatigue" and "strong current shock", the quality is guaranteed.
Have after-sales service that can provide a two-year warranty.
It has three functional modules: embedded mobile phone antivirus, one-click encryption and data recovery.
Specially made "twisted pair and double shield" cable eliminates external signal interference and ensures high-speed, stable and safe data transmission.
Have a complete circuit board "super loose" wiring design.
Of course, the mobile hard disk with the above advantages will have a certain gap in price compared with the "combination of bulk notebook hard disk and hard disk box" proposed by many hardware enthusiasts DIY, but it has many advantages in hard disk service life, data security, data confidentiality and after-sales service. If your mobile hard disk mainly carries some important data of companies or individuals, I suggest that you don't deposit the 200-300 yuan money. After all, in a reasonable price range, it is most important to use it with confidence.
So, what should I pay attention to when purchasing a mobile hard disk?
The first is the USB interface problem. As we all know, the transmission rate of USB 1. 1 interface is only 12Mbps, and the transmission rate of IEEE 1394 interface is 400Mbps. Although it is already very high, the 1394 interface is not popular in many peripherals, so it is not widely used. The transmission rate of USB2.0 interface can theoretically reach 480Mbps. In practical application, according to the author's experience, it takes about 3 minutes to transfer a file with the size of1g. Because USB2.0 has been popularized in most peripherals, it has certain universality. In the long run, I suggest you subscribe to a mobile hard disk with USB2.0 transmission capability. Secondly, the size of the hard disk. The original 3.5-inch mobile hard disk is relatively large, and the price is not much cheaper than the 2.5-inch mobile hard disk. I believe that everyone will not buy it. Here I want to talk to you about the recently popular 1.8 inch micro hard disk. The performance and volume of 1.8 "hard disk are indeed much better than that of 2.5", and the popularization of 1.8 "is also the leading direction for the development of mobile hard disk in the future. However, today, the price of 1.8-inch and 2.5-inch mobile hard disks with the same capacity is at least 50% higher. Therefore, in the current mobile hard disk market, the cost performance of 2.5-inch mobile hard disk is relatively high.
The price difference between brand-name mobile hard disk and bulk notebook hard disk makes many JS take risks, forcibly open the hard disk box and replace the original hard disk with an unknown bulk notebook hard disk. And when it comes to problem warranty, it can't be guaranteed by "someone has opened the trace of the hard disk box". As a smart consumer, when buying, you should carefully check whether the seal has been opened and whether all the accessories have been "replaced". Of course, it is best to buy from a reputable agent, and don't forget to ask for a formal invoice.
The following mobile hard disks with high cost performance are for your reference.
One: Travel Star 40G
As the main brand of domestic mobile hard disk, TravelStar launched "The Right Way on Earth-Declaring War on Assembling Mobile Hard Disk" from July 3 to August 30, and sold its 40G mobile hard disk at the freezing point of 999 yuan. Travelstar 40G mobile hard disk includes a Toshiba 40G, 5400rpm, 2.5-inch notebook hard disk, and its interface conforms to USB2.0 transmission specification. The phone anti-violation label and product model label are attached to the back of the shell, which is clear at a glance. There are also manufacturers' spray-painted labels, and the packaging and workmanship are quite satisfactory, reflecting the brand style.
Two: Asia News AS626
As another brand of mobile hard disk in China, the 40G mobile hard disk with the model AS626 of Asia News is also quite cost-effective. AsiaInfo AS626 mobile hard disk includes a Hitachi 40G, 5400 rpm, 2.5-inch mobile hard disk, and its interface conforms to USB2.0 specification. The current quotation is 1080 yuan. It is believed that the mobile hard disk of Asia News may have a follow-up trend under the price reduction storm that the price of 40G mobile hard disk of Travel Star drops to 999 yuan.
In short, the advantages of brand mobile hard disk in data confidentiality and data security preservation, coupled with the recent trend that the price of assembled mobile hard disk is getting closer and closer, I believe it will win the favor of many consumers.