If I understood correctly, He didn't meant to use a BR drive in RAID mode :bigsmile:
What he meant is if setting RAID for ports 4 and 5, also all other ports are set as RAID or remain as simple SATA ports, so they are still usable also for optical drives.
I'm not able to answer this question :o I don't know if the BIOS allow to set RAID only for selected ports or not.
My guess is that is better to set RAID first before to connect any other drive. If the BIOS sees an optical drive, my guess is that that specific port is automatically made unavailable for RAID setup.
Once the RAID array is set and running, I suppose that the other ports are still working regularly, but I'm not sure at 100%