USB Combo Drive 1.Write speed: 16X double layer, DVD-R, 52X ... +RW 316x DVD+RW, 32x CD-RW 4.Rea USB Combo DriveDVD Drive /DVD Burner /DVD RW Burner /Blu Ray DVD ... ± 5%, DC+12V ± 10 % Temperature Operating: 5 to 50 Storage: -40 to 65 Humidity Operating: 15% ~ 80% (Non-condensing) Storage: 15 ...