Got my unit this week, really a great piece of hardware! So far I am happy with it, have it running for now at 2.1Th/s with 550MHz for about 24 hours, with the flat side of the voltage knob pointing to between 9 and 10 (clock).

Speaking of the voltage knob, is there a standardized stock voltage position that applies to all units? Reason I am asking is because mine was shipped with the knob at 11, while I saw a picture of another user with the stock position at about 9 to 10: https://imgur.com/a/F1V84qf
Which is what I have set mine to as well now, saving me about 5 Watts while still running with the same hashrate.