What should I do if the U disk is reduced by G, and why is the U disk capacity reduced?

No. The unit conversion at the time of production is calculated according to 1000.

1g=1000m1m=1000k1k=1000bThe computer calculates and recognizes according to 1024.

1g=1024m 1m=1024k 1k=1024bSo almost all storage devices on the market, including some memory modules, will have insufficient storage space in the computer.

If your USB flash drive is 4GB, it is generally a few tens of MB smaller, which is only the capacity of the physical disk!

Just like your TV, let's say it's 32 inches, but its glass shell is 32 inches, but his actual glass is only for protection, and the inside may only be 31 .......inches, don't worry about nothing,

As long as there are a lot of things, you don't need to get back 4GB.

Double-check to see if the documents are missing.

Hard disk (including U disk) manufacturers, when they made it, it was 1g = 1000m per 1m = 1000kb per 1kb = 1000b, and the computing unit of the computer was 1g = 1024m per 1m = 1024kb per 1kb = 1024b, so the larger the capacity, the greater the error, you might as well convert it yourself, it's not that your classmates give you less use, but there are so many, you don't pay attention to it.

It's just a different calculation'

The manufacturer is calculated with 1000 units.

The computer is calculated as 1024.

It's normal, it's all done by profiteers, and all USB sticks are like this.

Is there a scientific basis for the "shrinkage" of the capacity of the USB flash drive?

The U disk marked with 128M shows that it is only 124M, which is not a quality problem? Consumer Wang Nailong said suspiciously.

Wang Nailong is a lawyer at Jin Yuanfeng Law Firm, and on December 2, 2005, he bought a 128M easy-to-save USB flash drive at 158 yuan in Shenyang Wal-Mart Department Store. When I got home, I saw that the USB flash drive was only 124M under the Windows system.

Wang Nailong believes: "The outer packaging of the U disk and the U disk itself are marked with the capacity of the U disk as 128M, and the actual capacity is insufficient, which means that the product use function cannot meet the commitment of the product description, which is a product quality problem." However, the manufacturers and distributors of wild acacia did not inform consumers in advance, and they were also suspected of fraud.

The customer service staff of Beijing Bihai Changfeng Technology, the best business of the easy-to-store U disk, said: "There is no quality problem in the U disk. "The reason is that the actual capacity of the 128M USB flash drive on the market is almost not up to 128M, and even some of the 128M disk has a capacity of about 110M, and the USB flash drive has 124M.

In addition, the system partition will also occupy part of the capacity of the USB flash drive, and it is normal for them to have 4M less USB flash drive.

Wang Nailong said that he could not accept the explanation of the company's personnel: "You can't think that 'a small amount of scale' is not a problem just because the U disk in the whole industry is 'lacking a small number of scales'." Having said that, 4m less is not a quality problem, does it have to be 100m less is a quality problem? ”

Some industry insiders said: "At present, the U disk 'shrinks' and sells friends, if the manufacturer deliberately 'shrinks', there are two main reasons: one is that when the U disk is connected to the computer, the driver in the computer itself will occupy some memory of the U disk;The second is that the U disk produced by the current domestic U disk manufacturers, the memory capacity calculation method marked is mostly calculated according to 1M is equal to 1000KB, and when the computer detects the capacity, the standard based on 1M is equal to 1024KB.

Therefore, although the USB flash drive is 'shrinking', it has a 'scientific basis'. ”

The staff of the Consumer Association believes that "the manufacturer's practice at least violates the consumer's right to know, and the manufacturer must explain the reason for this difference on the outer packaging of the product or the product instruction manual." ”

Wang Nailong said: "There are many people who use USB flash drives, but few people pay attention to how large the storage capacity of USB flash drives is. Even if you sometimes find that the storage capacity has shrunk, you don't want to involve energy to pursue it. ”

Wang Nailong said: "USB flash drive is a high-tech product, how to inspect it? To ** inspection?

I don't really understand. But I checked the relevant information and found that there are no relevant technical standards for U disk in China, and all domestic manufacturers are based on their own enterprise standards. He said that it is necessary to promote the introduction of standards as soon as possible through legal channels.

At present, the case of Wang Nailong v. Shenyang Wal-Mart Department Store over product quality issues has been formally accepted by the Shenyang Dadong District People's Court.