Product Information: Features: 100% brand new and high quality Used to back up important data to 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. Supports hot-swappable U-disk, easy to use, the U-disk can only be connected when needed. Supports DOS versions from 3.x to 7.x, compatible with WINDOWS3.X, WINDOWS 95/98/ME and other operating systems. Supports all file systems supported by the operating system. 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 original DOS system and the industrial control computer when it is inactive. Used for non-real-time data exchange between the computer and the industrial computer/embedded system. Using the universal U-disk on the market is easier to purchase than flash memory and electronic disk, and the capacity is not limited. Specification: Material: ABS Size: 12x7x1cm/4.72x2.76x0.39in Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! *Package includes: 1PC x ISA to USB Card 1PC x CD