Adaptec RAID card cable help

[AndersT2]

I just bought a Adaptec RAID card, 6805E. Which has 2 SAS connectors on the card for 8 S-ATA discs.

In the package there where 2 cables for this.

But on each of the cables there is a fifth cable that looks like a USB motherboard connector.

But I can't find any information on what this is for.

Anybody know?

EDIT: After a lot of googling I found out it's for "SGPIO", which is a communication to a controller of sorts for those with some kind of plug in harddrives stuff.

So nothing I need to think about. Too bad theres no info in the manuals that I could find. But again, these products might for the most parts be for businesses with tech personell.

[azeotrope]

It's probably a sideband cable to connect to an enterprise server's backplane. Not exactly end-user hardware, so info on it is harder to find.