CD filled with drivers for the PC, contains about 25,000 drivers brands like Dell, HP, Compaq, IBM, Sony, Panasonic, Toshiba, Intel, 3Com, VIA, nVidia, ATI, SoundMax and many others, no longer have to get in the tedious task of searching for the drivers and download Internet, simply insert the CD and is already! When the question mark in yellow in device manager windows, just put the CD in your drive and windows sought Driver on the CD.