The 68-pin Very High Density Cable Interconnect (VHDCI) connector is a very small connector that allows placement of four wide SCSI connectors on the back of a single PC card slot. Physically, it looks like a miniature Centronics type connector & sometimes called SCSI-5. As VHDCI officially falls under SCSI-3, the VHDCI cables are capable of the 320MB speed.