High quality, It is used to back up important data to the industrial computer / embedded system. Only one CH375DOS.Sys driver file is needed, the length is less than 5K, and only 4K is required after loading. Support hot swappable U disk, easy to use, U disk can only be plugged in when needed. Supports DOS versions from 3, x to 7, x, compatible with WINDOWS3.X, 95/98 / ME and other operating systems. Supports all file systems supported by the. For example, DOS 7.X can support FAT12 / FAT16 / FAT32. The controller only works when the application program reads and writes the U disk, and it does not affect the operation of the DOS system and industrial control computer when it is idle. Used for non-real-time data exchange between computer and industrial computer / embedded system. Using the universal U disk in the market, it is easier to buy than flash memory and electronic disk, and the capacity is not limited. Due to different product batches, the appearance may vary, which does not affect the use. Colour:Green Material:PC Size:12x7x1cm/4.72x2.76x0.39 inch Package Contents: 1 * Adapter Board 1 * CD Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.