It does the job
Not much to say except that it does the job.
In my case, I use SAS hard drives in a computer (instead of a server), so I used an "Adaptec ACK-I-HDmSAS-4SAS-SB-.8M" cable compatible with my "Microsemi Adaptec SmartRAID 3154-8i8e" RAID controller for data transfer, but the power supply is Molex.
However, current power supplies mainly have SATA power cables for hard drives and SSDs.
This adapter solves my problem.
Power supply with SATA connection, converted to Molex with this adapter to power my SAS hard drive via the special Adaptec cable.