1, USB flash drive mobile phone store, basically sold;
2. Digital shops and computer shops are generally available;
3. Brand store.
Precautions for purchase:
1, USB flash drive brand
When buying a USB flash drive, you can choose a common brand with good quality.
2. USB flash drive design
In this era when the design concept is very flamboyant, individual design can better reflect a person's exclusivity.
3. U disk works
U disk is small and easy to be damaged. If the shell of the U disk is not strong enough, it is easy to fall apart, resulting in the damage of the U disk, and the loss of data inside is very troublesome. So when choosing a USB flash drive, you should also check whether the shell material of the USB flash drive is dustproof, anti-falling and anti-static.
4. Is the USB flash drive extended?
Because of the strong sales ability of large-capacity USB flash drives, some profiteers will cheat consumers by expanding USB flash drives in order to make profits, so when buying, it is also necessary to check whether the purchased USB flash drive is an expanded USB flash drive.
5, U disk after-sales service
It is a common phenomenon that improper use of USB flash drive leads to data loss, so you should also ask after-sales service when purchasing to avoid users' worries.
Personal advice:
1. Buy from a well-known website at a reasonable price;
If you buy a brand, the quality is guaranteed.
Extended data:
U disk, full name of USB flash drive, English name of USB flash drive. It is a miniature high-capacity mobile storage product, which uses USB interface and does not need physical drive. Connect with computer through USB interface to realize plug and play.
The name of USB flash drive comes from a new storage device produced by Netac Technology, which is called "USB flash drive" and is connected by USB interface. After the USB flash drive is connected to the USB interface of the computer, the data of the USB flash drive can be exchanged with the computer. However, the equipment with similar technology produced later, because Netac has registered the patent, can no longer be called "USB flash drive", but changed its name to "USB flash drive". Later, the name U disk was widely known because it was easy to remember, and it was one of the mobile storage devices. There are many USB flash drives that support multi-ports, that is, three-way USB flash drives (USB computer port, iOS Apple interface, Android interface).
Matters needing attention
1, USB flash drives generally have write protection switches, but they should be switched on and off before the USB flash drive is plugged into the computer interface. Do not switch on and off when the USB flash drive is working.
2. All USB flash drives have working status indicator lights. If it is an indicator light, when it is plugged into the host interface, the light will turn on the power supply, and when it flashes, it means that data is being read and written. If there are two indicator lights, there are generally two colors, one is on when the computer is turned on, and the other is on when the USB flash drive reads and writes data.
After the system copy progress bar disappears, some USB flash drives are still working. It is forbidden to pull the USB flash drive when the read-write status light is on. Do not unplug the USB flash drive until the reading and writing status indicator light stops flashing or goes out.
3. Some brands and models of USB flash drives have little space reserved in the file allocation table, and it is easy to report errors when copying a large number of single small files. At this time, you can stop copying and adopt the method of compressing multiple small files into one large file.
4. In order to protect the USB interface between the motherboard and the USB flash drive, prevent deformation and reduce friction, if there is no requirement for copying speed, you can use a USB extension cable, which is usually given with the USB flash drive. If you need to buy, try to choose famous brands, and the thicker the lines, the better. But it can't exceed 3 meters, otherwise it is easy to make mistakes when copying data. Note that if the USB extension cable is USB1.1(full speed of USB 2.0), the speed will be very slow.
5. The storage principle of U disk is very different from that of hard disk. Don't clean up the debris, otherwise it will affect the service life.
6. There may be a virus in the USB flash drive, so it is best to disinfect the USB flash drive when inserting it into the computer.
7. It's best to immunize the newly bought U disk with virus, which can avoid U disk poisoning.
8. Do not insert the USB flash drive into the computer before it starts (before entering the desktop), otherwise the computer may not start normally.
References:
U disk-Baidu encyclopedia