So these adapters are what Sliger uses instead of a backplane in the CX3701 and CX3702 NAS cases they sell. I got a couple spares with my case they sent me as a review sample. I was curious to see what kind of difference in performance I would see with them VS direct SAS cable connection. The difference in speed was so negligible it wasn't worth the time to run the test more than once when it came to SAS 6Gbps. Also demonstrates the theoretical performance of one of the Toshiba MG07SCA14TE 14TB SAS hard drives.
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https://www.youtube.com/watch?v=aupoPFIpuFw