HIGHDING SATA Slot-in CD DVD-RW DVD-RAM Optical Drive Writer Burner Repalcement for AD-5670S AD-5680H AD-7640S Read Speed: DVD: 8x max. CD: 24x max Write Speed: DVD-R: 8x max. DVD+R: 8x max ; DVD-RW: 6x max. DVD+RW: 8x max ; DVD-R DL: 6x max. DVD+R9: 6x max ; CD-R: 24x max. CD-RW: 24x max Compatibility: All Windows OS