Some knowledge about the USB u disk

The market on a variety of u disk, but also flooded with a lot of fake u disk, the following teach a few strokes to identify the tricks of the fake U disk.

　　One, the fraud as far as possible, to you never give up

It product fraud is not a day two days of things. And the production of mobile storage products, the first is from the U disk and mobile hard drive flooded. In the early days of mobile storage development, profiteering determines the prevailing wind of fraud. When the technology development to the U disk price and capacity is inversely proportional, the product is cheaper, more and more thin, the wind of the fraud does not fade? The answer is, of course, negative.

　　Second, deception, has long been a makeover

In "315 Consumer electronic Complaint net", regarding the IT product class the complaint, belongs to the storage class product the complaint to be less than 10 in three months 2010 years ago, but does not mean that the consumer is deceived the chance to reduce. On the contrary, in the major professional website forum complaints, the more upward trend. Due to the increasing public credibility of the network media, the focus of the product complaints will affect the manufacturer's image in the eyes of consumers. Therefore, the professional network media platform exposure, more can cause explosive attention effect.

At present, the market on the U disk fraud phenomenon is still product-oriented, but the way is increasingly diverse. In order to pursue profits, compared to the shoddy, counterfeit brand, now counterfeiters not only the past "forte" to carry forward, and have more thunder, update the way.

　Third, the shoddy "cheap Large capacity Edition"

It is indisputable that the U disk's appearance, to a lot of people bring mobile data application convenience, but the damage to the users of the fraud, the direct manifestation of the harm to the data. As a storage medium of U disk, if the chip and circuit board quality is low, light causes transmission speed drop, heavy loss of important data, loss is basically unable to quantify. A few years ago, due to flash technology limitations, U disk's maximum capacity has been around 1G, the price is relatively high. User requirements for capacity more than the performance requirements, but the sensitivity of the price to make fake products opportunity, so "capacity fraud" has become the most important means.

"I tell you, before 32MB polished fake 512MB is nothing at all, now make the most ferocious is 1GB, 2GB after the Polish directly fake 32GB, 64GB, or even 160GB products, sell a huge cheap, kill is greedy ' cheap ' layman." "Zhangxiaochi (alias) is a counterfeit U disk factory in Dongguan, the director of his daily work is responsible for the acquisition of U disk chip to rewrite."

The so-called rewriting, that is, some of the cottage U disk factory use of regular low-cost flash chips, through the special software to modify the control of the chip information, to the capacity of the larger purpose. In other words, the quality of the product itself and the previous defective, obsolete products, is definitely good, but the capacity is "unlimited amplification."

As for the modification of the control chip software, we often say that the "mass production tool", which is dedicated to the U disk's control chip to write operations, the original purpose is to write operations on the chip optimization and maintenance, and rewrite the motherboard BIOS principle is roughly the same. But after a special design of "mass production tools", not only can modify U disk capacity, but also the U disk's read and write performance for the temporary optimization, to the low-speed disk posing as a high-speed disk for the purpose of selling profits. That's the second way we're going to fake it.

Ordinary production tools are not complex, the general user through a simple teaching can be started. But the "mass production tool" of the fake workshop is specially designed, and its function is very powerful. Zhangxiaochi introduced, his workshop, one day can be "production" out of "128GB" U disk more than 5,000.

　　Four, "fake market" why can be popular

Zhangxiaochi expressed regret for the user's feedback. In his view, such products have a market, first of all because there is demand. First, not all users are aware of the correct relationship between the volume and the price of the U disk. This allows counterfeiters to exaggerate the "quantity" and conceal the "quality" unilaterally. Second, the U disk is very easy to carry and practical, the demand is very wide, the price of the rapid decline so that a considerable user can ignore the loss of inferior quality. After all, not everyone carries the nuclear button password. Third, the channel's irregular, causes the consumer's discernment power to descend. In the two or three-tier city, or in the first-tier city of the computer market, a variety of brands of products, in the common sense of business, so that unscrupulous businesses can provide counterfeiters for the end of the value chain-sales.

"Anyway I use 2G or 4G flash memory chip, you 100 MP3 also use not to finish, you copy 1.4GB movie also use not to finish, say again, how much patience do you have to endure the big document of 8GB?" As for the U disk above the trademarks and customer service phone and other anti-counterfeiting measures, in fact, is also to prevent a gentleman not only-fake products, customer service phone, will never get through the time. "When you are on the market to see 32~160GB Flash drive only sell 80~120 yuan, please convince your curiosity, do not go to buy, because the short-term profit consciousness, will only bring you unforgettable pain." ”

　　Five, shoddy "low speed change High Edition"

Speaking of "Low-speed to high-speed", I am afraid many people will think of Yu-Zhan "Smile disc." This product is known for its high-speed transmission, but if you buy a fake, use less than 10 times, you will find that the speed is significantly slower, and finally by the "master" of mediocrity.

Why does this happen? There are two reasons: one is the role of mass production tools. As mentioned above, a special design of the "mass production tool" can be a U disk's read and write performance for the temporary optimization, to achieve low speed and high-speed effect. The second is the instability of the manufacturers defective.

First-line flash Memory granule big manufacturers of high-quality flash particles, through the matching with the appropriate master chip, reasonable algorithm optimization, can achieve high reading and writing speed, generally in 35mb/s (read) and 20mb/s (write) around, this is very good products. Note that such a flash product, in the master chip, particle quality and heat control of the three standards, extremely stringent, especially particle quality and heat control, must be a long time, high intensity of reading and writing test. It is the quality of flash memory particles cost is not low.

Here is a digression: In recent years, "Intel Engineering sample CPU out of the private sales event" has occurred, which is the same doorway and flash particles. Unstable high-frequency version of the project samples, after reducing frequency and enhance the heat dissipation control, the work effect than the low-end formal products are still strong, and the price of relatively high-end formal products cheaper, resulting in "outflow." Engineering sample processor and defective flash particles, the final is the factory after the elimination of the "specifications outside the product", but the weight of the camel's death after all, a lot of "well-intentioned" people on the above under the full effort.