I am looking for documentation related to this drive and recommendations for an interface card that would allow me to use it on a "modern" computer.
This rack-mount disk drive appears to have come out of a paging system.
It is labeled "Subscriber Memory Backup" from a Virginia-based company called Commonwealth Communications Industries, Ltd. The model number is apparently OP-635.
The unit has a standard 3-prong AC power cord, a keyed 4-pin female power connector, and a 50-pin ribbon cable with a dual row female connector.
The drive controller electronics are located underneath the drive mechanism.
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Last revised March 31, 2015