For sale is a SCM Microsystems (Adaptec) USB to SCSI 50-pin converter cable, useful for connecting various vintage SCSI devices to Macintosh and Windows computers.

Typical compatible equipment includes SCSI hard drives, MO drives, CD-ROM drives, and scanners. Active SCSI termination power is required for proper operation.

Important compatibility and driver information:
This is vintage interface hardware. Driver support depends on the operating system and intended use. Compatibility with modern versions of macOS and Windows is not guaranteed and may require legacy operating systems, older drivers, or advanced configuration. Please ensure this adapter is suitable for your specific setup before purchasing.

Please also note that the plastics on SCM converters are known to become fragile with age. Care must be taken when connecting and disconnecting cables to avoid damage.

The adapter is in good condition.


Fast and careful shipping from Tokyo, Japan. Please be aware of any customs import duties or taxes in your country. 

🇺🇸 US buyers: shipments are sent DDP (Delivered Duty Paid), which means there are no duty fees on delivery, as duties are included in the shipping rate. Please also note that customs delays may occur, particularly within the EU.

This is vintage hardware/software for vintage computers. Use of this item requires era-appropriate knowledge and compatible hardware/software. Please carefully verify your intended use and compatibility before purchasing. I am happy to answer reasonable questions, but I cannot guarantee compatibility with every system or configuration, nor provide step-by-step setup support. Damage or issues resulting from incorrect installation, modification, or incompatible use are not the seller’s responsibility.

I usually ship within 24 hours. If shipping falls on a Saturday in Japan, dispatch may occur the following Monday.