I have installed the Adaptec 6805 card into my server. It came with the cables needed to connect the card directly to the SATA drives. http://www.adaptec.com/en-us/support/raid/sas_raid/sas-6805/
One if the cables appears to be an 8 pin connector which could attach to Mb pins or pins on the card.
I think this cable is supposed to attach to some of the pins on the card so the the cases HDD access light illuminates when the drives are used. Is this correct?