If your drive is working as you read this' date=' back it up if you haven't already, then come back to this post later.
I'm backing up now.
I've already put it in.
I suspected the power connector, too. I hate these Molex plugs. This one, however seems fine.
No, the drive is mouned with adequate clearance on either side.
There's plenty of airflow and the case was open, to boot. The drive never gets hot.
It's been running now for about 40 minutes with no trouble.