HIGHDING CD DVD Burner Writer ROM Player Drive for HP EliteBook 6930p 8440p 8530p 8540p Laptop Computer Burn DVD's & CD's, Play/Read DVD's & CD's 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