update [URL]  , check at 1:34 and onward, shows that a power cable is located in that position. Please confirm if present
This was sort of asked in a different post, but the answer didn't seem to quite apply; sorry for "re-asking". I have a 5820, and am using all four bays with HDDs.  I also have the slimline ODD, which is DREADFUL for ripping audio CDs, so I'm looking to populate the 5.25" bay with an optical drive.  I have a SATA *data* connector hanging free at the back of that empty bay, but I don't see a corresponding *power* connector. Is there a SATA power cable buried under there that I just didn't see? Is there a header I can pull power from? I haven't removed many parts from that section of the machine, but I ASSUME I can get to the slimline drive.  Can I just use some sort of Y-cable for power (perhaps from the slimline drive), and use the data cable that's already in the case? Or is this one of those "if you've installed this, you can't install that" kinds of things (a la four hard drives and Dell's NVMe kit)?
Adding ODD to Precision 5820 Tower