ATAPI

ATA Packet Interface (ATAPI) is a protocol that has been added to Parallel ATA and Serial ATA so that a greater variety of devices can be connected to a computer than with the ATA command set alone. It carries SCSI commands and responses through the ATA interface. ATAPI devices include CD-ROM and DVD-ROM drives, tape drives, magneto-optical drives, and large-capacity floppy drives such as the Zip drive and SuperDisk drive. https://en.wikipedia.org/wiki/ATA_Packet_Interface

ATA Packet Interface https://en.wikipedia.org/wiki/ATA_Packet_Interface