I bought a new SATA Blu-Ray burner for my Mac Pro 3,1, and connected it to one of the two "extra" SATA ports on the motherboard.(you know, the ones behind the fan assembly) I booted up the machine running 10.7.3 and inserted a DVD disc into the drive. Nothing happened, no disc visible in Finder. I tried ejecting the drive using the keyboard eject button, nothing happened. I opened the system profiler application, and looked at the SATA devices list. I see my hard drives on the list, but not the Blu-Ray drive. There are 6 AHCI interfaces listed, 4 of them are occupied by hard drives, and the other two I'm guessing are the 2 "extra" ports on the board, one of which I used to connect this new drive. Why doesn't the system see the drive? What do I need to do to make this drive work? Drive model: LITE-ON IHBS112-04 Thanks in advance!