这里有，自己下载吧
http://supportapj.dell.com/support/downloads/download.aspx?c=cn&cs=cndhs1&l=zh&s=dhs&releaseid=R69382&SystemID=DIM_PNT_P4_8250&os=WW1&osl=CS&deviceid=1249&devlib=0&typecnt=1&vercnt=1&formatcnt=1&libid=3&fileid=90207
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