Everything works perfectly, simply configure the jumpers / switches to configure each of the 2 ports or by e-SATA or SATA internally.
However, for my specific case, I needed the "Port Multiplier" function to connect my external HDD enclosure 4 (Icy Box 11584), relatively few controllers support: if this is your case, know it, Asmedia controller does not work with this camera Icy Box (Turning to a card ASUS U3S6 = tested / verified).
The difficulty is double with the port-multiplying (PMP):
-> We must find a controller card that supports the (often incomplete docs etc); a list here: https://ata.wiki.kernel.org/index.php/SATA_hardware_features
-> And above all there are TWO MODES HDD PMP for change, and they are INCONSISTENT = your device and / or controller does not support a priori only ONE OF THESE MODES! => It is the lottery to "couple" the two ... it's either Frame Based Switching (FBS / FIS) or Command Based Switching (CBS).
