Issue with 2nd sata controller on 2012 mac mini server

Hi guys,

Recently picked up my BTO 2.6ghz mac mini, and I love it. I decided to RAID-0 2x 480GB sandisk extreme SSD's and things have been mostly fine.

However, I have noticed that link speed/negotiated link speed are 6gbit/6gbit for the first controller, but the 2nd controller reports 6bit/3gbit!

Does anyone have any idea what to do to fix this? I've flashed both of my drives with their latest firmwares, but no difference yet.

Cheers,
bogchop.

 

Finding that a little hard to fathom, as I'm using the original apple cables (server edition mini with 2 stock 1tb Hdds originally). Made absolutely sure everything was replaced correctly and carefully.