How to determine the true storage capacity of an USB flash drive?

How to determine the true storage capacity of an USB flash drive?

How to determine the true storage capacity of an USB flash drive?

Engaged in U disk production customization industry, has accumulated nearly 10 years of professional experience, often heard guests respond to U disk purchased from other places, the actual storage capacity is insufficient, plug in the computer, U disk can not read data or zero bytes. Even the U disk originally marked 16GB, but you can't save new things when you save a few photos. In a similar situation, not the customer's photo or digital file is very large, I concluded that the U disk in the customer's hand would have been a problem, obviously the lack of flash memory capacity.
 
Looking back on the sales experience for many years, I met countless deceived guests and listened to their complaints. In order to prevent further customers from being deceived by dishonest suppliers, I decided to publicly customize the secret of the gift U disk and teach you how to distinguish the real storage of the USB flash drive. capacity.
 
First introduce the U disk structure: chip + solution (circuit board) + shell + program technical support + assembly finished product + packaging package.
 
The actual capacity and stability of the U disk depends mainly on the chip level. The FLASH is divided into three levels: A, B, and C. The A level and the B and C levels have a large price difference. Because the A-level chip is stable in performance, read and write speed, etc., the performance is worthy of recognition. Although the B-class flash memory can be used normally, it is prone to inconsistencies such as incompatible programs and zero bytes; C-level flash memory often has problems.
 
The most primitive and clumsy method of detecting a USB flash drive is also the most useful and direct method. Copy the video file or photo similar to the size of the USB flash drive directly to the USB flash drive. For example, the real effective storage capacity of the 4GB U disk is 3.75GB. Please be sure to copy the 3.73GB file. If the file can be used normally and the video playback is smooth, then it can be proved to be a qualified good USB flash drive. Otherwise, it is a defective product or a defective product. product.
 
Usually use U disk must pay attention to:
1. Please make sure that the computer is not infected with viruses, otherwise it may damage the built-in program of the USB flash drive;
2. Please do not pull out directly, disconnect the computer, please right click on “Safely Remove USB” and then pull out the USB flash drive from the computer, otherwise it will affect the service life of the USB flash drive;
3. Please keep a backup of important documents in time. Please do not cut the files directly. It is best to use the copy function to develop a good habit of data backup at any time.
4. Data loss is caused by many factors, including sudden power failure, unstable power supply voltage, manual power-off and direct plug-in, error deletion, error formatting, intrusion virus destruction, improper encryption permission setting, incomplete firmware upgrade, external Electromagnetic interference, etc.

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