Unknown Devices after installing Windows Vista / 7 – ThinkPad SL300, SL400, SL500, R400, R500, T400, T500, W500, W700, W700ds, X200, X200s, X200 Tablet and X301

Posted on October 31, 2013 by bentoslack

source : http://support.lenovo.com/en_US/downloads/detail.page?DocID=HT004603