读写USB口（massstorge）的程序，读写USB口上插得U盘或硬盘等设备的数据，写的时候要注意，写0磁道等地址上的数据时，会破坏文件系统，请小心操作。-Read and write USB port (massstorge) program, read and write on the USB port was inserted U disk or hard drive and other equipment, data, write the time to pay attention, write 0 on the track data such as address, will destroy the file system, be careful.