回复：谢谢游学长！1），2）两部我都试过， 没用， 我看就

右击“my computer" 选”属性（properties)“, 点击”硬件“， ”device manager", 找到“universal serial bus controllers" , 右击后选delete。restart your computer. it should find drivers automatically for all deleted u***** hub or controller. then plug in the SD card.