Thats funny, I bought the Inateck last week and had the same problem.
Your issue does not sound like the same problem. I think you have something else going on. It doesn't always work with ALL hardware configurations (I know of 2 users who had conflicts), and I suspect a defective unit happens once in a while too.
Although I've never had a problem with buss powered drives, it's not hard to imagine that some drives require more power than the Inateck provides. Inateck advertises upto 1GB for buss powered portables. I actually have 2x 1GB drives permanently attached to my Inateck. Who knows, perhaps quality isn't what it used to be. Good luck.
Just for informational purposes.
I have a 5,1 single CPU 3.33GHz W/48GB RAM (Yosemite 10.10.2 & Mavericks 10.9.5)
Slot1 - AMD 7970 GPU
Slot2 - Velocity SoloX2 W/512GB Samsung 840 Pro
Slot3 - Inateck KT-4004 USB 3.0 Adaptor
Slot4 - HighPoint RocketU 1144C USB 3.0 Adaptor
I have placed the card in every slot except slot1 at various times without negative issues. I don't think the problem is endemic to the KT-4004. I personally favor the
HighPoint RocketU-1144C, but there are several alternatives. I have several working Orico cards, but these are my least favored (dependability & performance) for my particular uses.
2 cards that I don't own that get incredibly good reports by other users are the newest
Caldigit card and the
Sonnet Allegro