用DriverStudio3.2编写的USB驱动，端口8读PC机的数据，端口2向PC发送数据，如果字节数小于2^20，速度可以达到30MByte/s。-Written by DriverStudio3.2 USB drive, PC, port 8 read the data, port 2 to send data to the PC, if less than 2 ^ 20 bytes, the speed can reach 30