EMPREX 16x DVD&plusmn;RW INTERNAL DRIVE, DOUBLE LAYER (DVD) Double Layer 8.5GB, Single layer 4.7GB Writing Format DVD+R DL, DVD+/-R, DVD+/-RW, DVD-ROM, DVD-VideoCD-DA, CD-ROM, CD-ROM XA, CD-Extra, CD-I, Mixed-Mode CD, Video CD, Photo CD, CD-TEXT, Bootable CD, CD-R, CD-RW, Multi-Session Writing Methods Track at Once, Disc at Once, Session at Once, Multi-Session, Packet Writing(Variable & Fixed) , Multi-track Reservation Data Transfer Rate Max. 66MB/sec; Access time (DVD) 160 ms (16X) Data Buffer 2MB; Disc Loading Tray loader, dust sealed; Mounting method Horizontal