... hard drive 2.Stand-alone:No PC Required 3.Support BD-R, BD-RE ,DVD+/-R,DVD-RW,CD-R,CD-RW ... hard drive1drawer for 3 /5 /7 pcsFeatures:-Supports BD-R, BD-RE, BD-R DL, BD-RE DL, DVD+/-R, DVD+/-RW, DVD RAM ... automatically recognizes the source disc format-Duplicator controller automatically formats BD-RE discs-"User friendly" controller utilizes familiar "esc" & "ent" keys ...