100 percent brand new and high qualityIt is used to back up important data to the industrial computer or 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, WINDOWS 95 or 98 or ME and other operating systems.Supports all file systems supported by the operating system. For example, DOS 7.X can support FAT12 or FAT16 or 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 industrial control computer when it is idle.Used for non-real-time data exchange between computer and industrial computer or 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.Colour: greenMaterial: PCB board and plastic and metalPackage Contents:1 x ISA to USB Adapter BoardNote: Different batches, the appearance of the product may be different from the picture, which does not affect the useOnly the above package content, other products are not included.Note: Light 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.