SCSI Adapter, Internal – SCSI 3 to SCSI 1 $8.50 68 pin to IDC 50 SCSI Adapter, Internal - SCSI 3 to SCSI 1 quantity Add to cart Add to Quote Continue Shopping Categories: Cables & Adapters (Macintosh), SCSI Parts (Internal) Description Add a SCSI 3 drive inside your Mac. This adapter connects a SCSI-3 internal hard drive with 68-Pin Female Connector to an internal IDC-50 Pin Female Ribbon cable. These are new in the package.