The Adaptec SCSI Card 2906 protects your SCSI peripheral investment by providing the same internal and external connections previously available with built-in Mac SCSI. And it works with Old SCSI manager as well as newer SCSI Manager 4.3 compatible devices for maximum compatibility. It also provides 10Mbyte/sec Fast SCSI performance that is twice as fast as the previously provided built-in Mac SCSI, and 6 times faster that the standard PC parallel port. (In Europe, only available for Macintosh.)