RE: 2nd drive install issues with Dell 9550 (p56f001)
Thanks, that at least removes that possibility. A bit more performance would be nice, but not worth the trouble (not sure what it would entail, but obviously something since it wouldn't boot up when I tried it).
I've ordered a second interposer cable in hopes that the issue is there. If that doesn't work, I guess I'll just live without it.