What are SCSI connectors?
SCSI or Small Computer Systems Interface is technology designed to connect devices to a computer. SCSI is a bus technology, which means that all devices connect to a central bus and are "daisy-chained" together. The SCSI bus is controlled by a host controller which will typically be built into the motherboard, or it can be from a separate expansion card. A SCSI connector is either external or internal. The cabling/connector requirements depend upon the location of the SCSI bus. SCSI uses three different signaling types, Single-Ended (SE), Differential (HVD or high-voltage differential), and LVD (or low-voltage differential). The most important things to remember when selecting your SCSI cable is the type of connector required by your devices, and the location of the cable, either internal or external.
VHDCI 0.8mm 68-Pin
The Very High Density Cable Interconnect or VHDCI 0.8mm 68-pin connector has 68 pins arranged in two rows one on top of the other. The top row has 34 pins and the lower row has 34 pins. The pin arrangement closely resembles that of a Centronics type interface. This connector is typically used in SCSI-3 applications such as RAID.