Quickly get a Dreamcast back up and running with this authentic, OEM GDROM drive. This unit was tested in the original NTSC-U (North American) Revision 01 which it was shipped with. This is the 3.3v version with the control board built in for revision 01 Dreamcast consoles ONLY. It will fix your dreamcast if it boots up to the operating system but will not recognize/read discs.Includes: GD-Rom Drive, Integrated Board, OEM mounting screws x 4SpecificationsVoltage: 3.3v Dreamcast Revision: 01 OEM: Yes Part Numbers: JA99231813, A1A9926521 A Manufacturer: Samsung Nation of Manufacture: Korea