The Sony Digital Tape Backup Drive. ATDNA2.

Includes LSI Logic 20320-R PCI-X SCSI Interface Card and connecting SCSI Cable. It was actually removed from the system like this so i know it is a compatible set.  It wasn't tested. I've never actually used it and was simply removed from a retired PC from a business.
If you need more info about this unit, you can google it where i found manuals and specs.

Thanks for looking.