TS-H552B Combining CD & DVD technology with maximum recording capabilities Features: To create personal DVD title : DVD+R, DVD+RW, DVD-R, DVD-RW/ Data Back-up : DVD+R, DVD+RW, DVD-R, DVD-RW, CD-R, CD-RW/ Buffer Under Run Free technology/ SAT (Speed Adjustment Technology)/ Writing : DVD+R, DVD+RW, DVD-R, DVD-RW, CD-R, CD-RW/ Reading : DVD+R, DVD+RW, DVD-R, DVD-RW, CD-R, CD-RW, DVD-ROM, CD-ROM/ Writing DVD-R double layer 2.4x/