1)USB CDROM 2)USB CDRW 3)USB DVDROM 4)USB Combo(DVD+CDRW) 5)USB DVDRW 6)USB FDD(floppy disc) *OEM, neutral brand. 5)USB DVDRW USB2.0,DVD+/-RW; Speed: 24X8X8, 12MB/S or 480MB/S; Power: can be powered from USB or PS2, no need external AC adaptor; Super thin, level or standing operation, Shockproof, low noise; CD-R Speed: 8X, CD-ROM speed: 24X, DVDROM 8X; Super thin, level or standing operation, Shockproof, low noise; Plug and Play(except Win98SE); Compatible: DVD-R,DVD-RW,DVD+R,DVD+RW,DVD-ROM,CD-DA,CD-ROM,CD-ROM XA,CD-I,Video CD, Video discs, Photo CD ,CD Extra,CD-Text,CD-R,CD-RW Accessory: USB line, instruction, Driver for win98,PS2 line; Gift Box