High-quality adapter board designed for backing up important data to industrial computers or embedded systems. Requires only a single CH375DOS.Sys driver file, which is less than 5K in size and occupies just 4K when loaded. Supports hot-swappable USB drives for convenience, allowing USB drives to be connected only when needed. Compatible with DOS versions from 3.x to 7.x and works with 3.x, 95/98/ME, supporting all file systems recognized by these OS, including FAT12, FAT16, and FAT32. Operates only during USB read/write activities, ensuring it does not interfere with the DOS system or industrial computer operations when idle. This high-quality adapter board is designed for backing up important data to industrial computers or embedded systems. It is ideal for non-real-time data exchange between computers and industrial systems, this adapter uses universally available USB drives, offering an easier and more flexible alternative to flash memory or electronic disks. Color: As Shown Material: ABS Package Contents: 1*ISA to USB Industrial Card 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.