USB转网线

主机要接受数据必须先发IN包，
那么网络上的数据是会随时，随机来的啊，

i didn't have any research on such cables. however, depends on the usb specification, i think it's easy to use an interrupt transfer to do this.

usb的网线要一个滤波器所以还不如卖一条也不是多贵