PDO1=5V1A, PDO2=15V1A, PDO3=20V1A (though I've also tried different combinations including setting PDO2 and 3 to 20V).I also have the REQ_SRC_CURRENT bit set high. So I would think it would select 20V5A if available. It works fine with sources that h...

Thanks for your response @s​ ! And of course you are completely right, however I am already using a eMarked cable that is 5A capable. I believe the problem has to do with the STUSB4500 being limited to 3PDOs and the source having 2 20V PDOs. I'm gues...