Dell XPS M1720 Blu-ray Burner Drive XT409 0XT409Product Features:1x BD-RE Writing speed, 25GB1x BD-R Writing speed1x BD-RE DL Writing speed, 50GB1x BD-R DL Writing speed5x DVD-RAM Writing speed8x DVD-R Writing speed2x DVD-R DL Writing speed,4x DVD-RW Writing speed8x DVD+R Writing speed2.4x DVD+R DL Writing speed4x +RW Writing speed8x CDR Writing speed8x CDRW Writing speed24xCD Reading Speed8xDVD Reading Speed1.6XBD Reading SpeedPATA128 mm x 129 mm x 12.7 mm (W x D x H)