Well things are complicated:
Vantec has decided so use a 4-pin molex connector (as you use it for IDE hard drives or optical drives) for power supply of their Tornado.
And they use a 3-pin molex as it is used for fans with only a single yellow line connected which supplies the speed signal.
But: The Kaze Master expects a combined 3-pin molex connector with the two power pins and the yellow speed line so that it can a) show the rpm and b) control the fan by voltage regulation.
So in the Vantec FAQ you linked to it is proposed to use an adapter which changes the big 4-pin molex into the smaller 3-pin "fan" molex so that you can connect the Tornado the the Kaze Master. The Kaze Master would then be powered by the KM and could be regulated through it. BUT: As the big 4-pin molex connector doesn't carry a speed signal you could only regulate the speed but wouldn't get any feedback on the actual rpm as there is no possibility to additionally connect the separate yellow speed line.
The solution would be to remove the single yellow line from the small 3-pin molex and connect it also to the empty third pin of the 4-pin to 3-pin molex adapter. Assuming that you now how to do that without destroying anything. That's how I understand this whole matter.
This is how the adapter would look like:
http://webshopvision.main-shops.de/u...1615_1_big.jpg
As you can see the smaller end of this adapter only has 2 pins (red & black). If you were able to also connect to single yellow line to this smaller connector, you'd have speed regulation AND speed signalling.