Features: Used for exchanging data between computer and industrial controller system in not real time. Used for backing up important data in the industrial control machine/embeddedly system. Use common USB disk on the market, easier to purchase than fmemory and electronic disk, unlimited capacity. Supports all file systems that the operating system can support, for example, can support FAT12/FAT16/FAT32. PC104 to USB adapter card simplifies the integration process, allowing for quick and easy setups without sacrificing quality. Specifications: Item：PC104 to USB Adapter Card Size：about 12x4x2cm/4.72x4.15x0.79in Package Includes: 1PC PC104 to USB Adapter Card note: Due to problem of lighting,there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurement