External blu ray burner type external bus usb 30 max read speed bd rom 12 x max read speed dvd rom 16 x write speed bd r 6 x write speed bd re 6 x write speed bd re dl 8 x write speed bd r dl 8 x dvdr write speed 16 x dvd r write speed 16 x dvdr dl write 12 x dvd r dl write speed 12 x dvdrw write speed 8 x dvd rw write speed 12 x dvd ram write speed 5 x max read speed cd rom 48 x cd r write speed 48 x cd rw write speed 40 x double layer