Hello,<br />&nbsp; &nbsp;I test for several times and find that if add the following line, the KB and MassStorage will work,&nbsp;&nbsp;<br />&nbsp; &nbsp; &nbsp; &nbsp;InputContext-&gt;EP[0].EPType = ED_CONTROL_BIDIR;<br /><br />&nbsp; &nbsp;I don't know if the issue is brought in by the different of xHCI controllers or else.