Description

Internal SCSI expansion cards and adapters let you add SCSI 2 or SCSI 3 drives to your Mac – both internal and external. These are called many names, but I’ll go with the shortest – HD50 or HD68. Also can be MD50, Micro 50, Mini D50 or MD68, Micro 68, Mini D68, Ultrawide, Ultra2, LVD.

SCSI-2 devices have the 50 pin HD50 ports (approx 1-3/8” wide). Most, if not all, use a latch mechanism instead of thumbscrews.

SCSI-3 devices have the 68 pin HD68 ports (approx 1-7/8” wide). Some use a latch mechanism and some use the traditional screws.

New cables are available in 3’ or 6’ lengths. Used cables can be less than 3′ or 4-6′. Some have metal ends. Colors vary.

3 foot cables

• A) HD50 to DB25. M/M. SCSI-2 to 25 pin SCSI-1
• B) HD50 to CN50. M/M. SCSI-2 to 50 pin Centronics (SCSI-1)
• C) HD50 to HD50. M/M. SCSI-2 to SCSI-2
• D) HD50 to HD68(screw). M/M. SCSI-2 to SCSI-3
• E) HD50 to HD68(latch). M/M. SCSI-2 to SCSI-3
• F) HD68(screw) to DB25. M/M. SCSI-3 to 25 pin SCSI-1
• G) HD68(latch) to DB25. M/M. SCSI-3 to 25 pin SCSI-1
• H) HD68(screw) to CN50. M/M. SCSI-3 to 50 pin Centronics (SCSI-1)
• I) HD68(latch) to CN50. M/M. SCSI-3 to 50 pin Centronics (SCSI-1)
• J) HD68(screw) to HD68(screw). M/M. SCSI-3 to SCSI-3
• K) HD68(latch) to HD68(latch). M/M. SCSI-3 to SCSI-3

6 foot cables

• L) HD50 to DB25. M/M. SCSI-2 to 25 pin SCSI-1
• M) HD50 to CN50. M/M. SCSI-2 to 50 pin Centronics (SCSI-1)
• N) HD50 to HD50. M/M. SCSI-2 to SCSI-2
• O) HD50 to HD68(screw). M/M. SCSI-2 to SCSI-3
• P) HD50 to HD68(latch). M/M. SCSI-2 to SCSI-3
• Q) HD68(screw) to DB25. M/M. SCSI-3 to 25 pin SCSI-1
• R) HD68(latch) to DB25. M/M. SCSI-3 to 25 pin SCSI-1
• S) HD68(screw) to CN50. M/M. SCSI-3 to 50 pin Centronics (SCSI-1)
• T) HD68(latch) to CN50. M/M. SCSI-3 to 50 pin Centronics (SCSI-1)
• U) HD68(screw) to HD68(screw). M/M. SCSI-3 to SCSI-3
• V) HD68(latch) to HD68(latch). M/M. SCSI-3 to SCSI-3

If you are in need of cables with different connectors:

Regular SCSI Cables (SCSI-1) are found here.

PowerBook SCSI Cables are found here.