SCSI stands for Small Computer System Interface, and is a standardized interface for transferring data between certain computers and their peripheral devices. SCSI Connectors, often referred to as a scuzzy, these connectors have been used in domestic and industrial computing for many years, and have evolved through many iterations, and can be used, for example, to connect motherboards with disk drives.
The RS Range of SCSI connectors includes IDC headers, often called an internal SCSI Connector, which are typically used to connect components internally within a PC. Popular example so this include AXA and SATA disk drives.
With a variety of contacts and pitches available, there is a SCSI connector to suit your application.