careful if disk connected: power problem

- The self-powered KT4005 is the worst.
First card received: Failed to power a hard drive on the 2 most distant ports PCIe connector.
2nd card received: If I connect a second hard drive .... 1 is offline automatically !! And regardless of the harbor! therefore even a power problem, this time the card appear to support two hard drives at once.

Furthermore, on 2 cards received, the golden connectors PCIe seems very weak (the golden color is almost absent and / or stained) quality problem?
So certe this is the cheapest of the lot, but I have serious doubts about the quality ...

- The KTU3FR-4P with external power supply:
One of my drives is not recognized, and that regardless of the port. This seems a little better than KT4005, but I need to feed my 2 KO therefore drives. No mention of a limitation in the documentation.

- The self-powered KT4004:
I will comment more complete on the page dedicated once tested, but it seems to work better than the other 2 (not perfectly, at least on one of the ports, but better than the other two anyway).

In summary, if you feed USB keys that should be close to work.
But for one or more hard disks, it is the lottery.
Yet the card should be able to leave 4 * 900mA. For the KT4005 is clearly excluded.