Intel Mobile Chipset(バージョン:4.20.1006, A02)
http://supportapj.dell.com/support/downloads/download.aspx?c=jp&l=ja&s=gen&releaseid=R50830&SystemID=INS_PNT_CEL_1100&servicetag=&os=WW1&osl=jp&deviceid=1134&devlib=0&typecnt=0&vercnt=1&catid=-1&impid=-1&formatcnt=0&libid=27&typeid=-1&dateid=-1&formatid=-1&source=-1&fileid=60098