They are inserted into the usual Type A USB port and are compatible between devices from different manufacturers, with different operating systems and technical characteristics. But if you need a USB flash drive for a DVR, a camera or a similar "mobile" device, then, probably, SD or microSD will suffice. The specific specification can be obtained from the device documentation or inscriptions on its case. Read-write speed vitesse de lecture / écriture This setting determines how fast data will be copied to and from the USB flash drive. In the vast majority of models in the average price range, it depends directly on the reader standard. That is, USB Flash Drives with USB 2.0 will provide an average read-write speed of 480 Mbps, and with USB 3.0, about 5 Gbps.

What Should Be Kept in Mind

It should be remembered that the writing speed is always lower than the reading speed. This is due to the special features of the USB keys. In addition, the recording speed of a single large file is much higher than that of many others, but with the same volume - for the same reason. Therefore, if you plan to "download" large files to the USB flash drive, you must choose a drive with a high write speed. If used to store documents, photos, or music, this setting may be neglected. Volume (capacity) The volume of the USB stick is one of its most important settings.

Additional Facts

It determines how many files can be placed on it. In addition, the price of the disc depends directly on the capacity. The relationship between price and storage capacity is non-linear. For example, flash drives with a volume of less than 8-16 GB have a higher cost per gigabyte. The most economical drives are 32 GB. Flash drives of 64 GB and more are still distinguished by the high cost of a gigabyte. In addition, it should be remembered that the volume specified in the specifications of the flash drive is different from the one that exists. This is due to the peculiarities of megabyte counting. Thus, the flash drive, on which package "16 GB" is indicated, will have a real volume of about 14.7 GB. The USB Flash Drives on the "32 GB" - about 29.5 GB.

This setting determines the usability of the flash drive. It is composed of materials, shape and size. The most optimal variant of the flash drive housing material is plastic (or polycarbonate). Metal drives, of course, are more resistant to mechanical stress - such as bumps, scratches, etc.

However, they may cause a static power failure on a poorly grounded CPU housing, which in turn will result in data corruption or a total loss of performance of the unit. Flash drives whose case is made of wood, leather or other materials look attractive, but they are quite expensive. The shape of the device largely determines the convenience of its connection.

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