VHDCI describes a compact connector family, not a guarantee of protocol or pinout. You may find VHDCI interfaces on parallel SCSI host adapters, data-acquisition hardware, and proprietary industrial equipment. Before ordering, identify what the equipment sends through the connector and how each end is wired.
The most reliable specification combines connector evidence, equipment documentation, and the complete installation requirements.
Identify the exact VHDCI interface
Confirm whether the connector has 68 or 100 contacts, then record gender, keying, screw or latch arrangement, and cable exit space. Compare the port face to a manufacturer drawing. Don’t confuse a compact 68-position connector with the larger HPDB68 or MDR family.
Match the other end
Common assemblies include VHDCI-to-VHDCI and VHDCI-to-HPDB68, but the correct choice depends on the actual host and target ports. Browse the VHDCI cable product range and 68-pin SCSI cable options to compare formats.
For DAQ or industrial I/O, obtain the equipment pinout. Equal contact counts do not establish equal wiring.
Confirm signaling and topology
For parallel SCSI, confirm SE, HVD, LVD, or LVD/SE multimode. Never mix HVD with SE or LVD. Calculate the total bus length and terminate at both electrical endpoints.
A connector adapter changes mechanics, not protocol or signaling. If a legacy peripheral is being attached to a newer HBA, verify controller support for the peripheral’s mode and width.
Choose construction for the environment
External high-speed assemblies benefit from controlled pair geometry, shield continuity, secure hoods, and strain relief. Specify the shortest practical length while allowing a service loop and safe bend radius.
In dense cabinets, state cable exit direction and available hood clearance. If the cable flexes repeatedly, describe the motion rather than assuming a standard stationary construction is appropriate.
Prepare the inquiry
Send BespokeCable port photographs, equipment models, length, signaling, pinout, environment, quantity, and labeling needs. Use the SCSI cable collection for adjacent families, and consult the MDR cable buying guide when the interface may actually be MDR.
VHDCI for SCSI versus non-SCSI equipment
On an SCSI host adapter, the manual should identify the channel, supported modes, and termination behavior. On DAQ or test equipment, the same connector family may carry dozens of independent signals defined only by the vendor. A passive cable cannot translate between these applications.
If the destination is a breakout panel, provide both pin maps and identify any shield, chassis, or power contacts. If it is an external storage enclosure, provide the SCSI mode and bus topology instead.
Avoid two common ordering errors
First, do not order by 68-pin count while overlooking the difference between VHDCI68 and HPDB68. Second, do not assume a VHDCI-to-VHDCI cable is straight-through for every industrial device. Confirm the mechanical drawing and electrical map independently.
Before you finalize the cable
- Confirm both connector faces, gender, keying, and retention hardware.
- Confirm the equipment protocol, signaling mode, and approved pinout.
- Check total bus topology, length, and the two termination endpoints.
- Approve the drawing or verified sample before production or installation.
Next step
If you want BespokeCable to review an SCSI cable requirement, send the host and peripheral models, clear port photographs, required length, pinout or equipment manual, installation environment, and quantity. These details let us evaluate the requested assembly without guessing from a connector nickname.
