port

Hi, I'm sure I'm not the only who is looking for such a solution: I'm looking to purchase 4 U.2 drives and hook them into a Threadripper based motherboard (I didn't buy any motherboard yet, still planning). Surprisingly, the only card I found is the Supermicro AOC-SLG3-4E4R (and the 4E4T...

Can anyone direct me to a port map for this? I am interested in specifically which "inputs" map to which "outputs". Its been frustrating.. I have been unable to find any relevant documentation on either the board or the expander chip it uses. What documentation that is available engages in...