Tripp Lite's Internal 30in (2.6ft) 50pin, SCSI Ribbon Cable has 4 Connectors and is Used To Connect 50pin Internal Devices. This is the correct internal SCSI 50-pin ribbon cable for narrow and wide SCSI, sometimes called SCSI-1 and SCSI-2. This Tripp Lite product is perfect for internal CD-ROM drives or hard drives. Our products are fully tested and certified to meet or exceed applicable industry standards. Tripp Lite offers a lifetime replacement warranty on all cable products.