OK, if I've got this straight, pin 20 should be blocked. Since the 2.5" drive connector is 44 pins and the 3.5" drive connector is 40 pins, this gives us an asymmetric connection for the 44-pin connector, such that we can easily identify pin 20 on this adapter. That means we can locate all the other pins, and in the attached image pins 1, 2, 43 and 44 are noted. If this is correct, then when this adapter is seated on the ATV it should be pointed in the "right" direction so as not to interfere with the power supply. Pins 41 and 42 carry the 5V lines for the hard drive and controller and as you can see from this post (other attached photo) that should put those two pins in the right place.
So, I think this adapter will seat; however, it does not necessarily mean it will support booting of the ATV as these adapters have a history of being iffy. Everyone study this hard to make sure I didn't screw up the logic...
So, I think this adapter will seat; however, it does not necessarily mean it will support booting of the ATV as these adapters have a history of being iffy. Everyone study this hard to make sure I didn't screw up the logic...