Hello, sorry for reviving an old topic but I am also having a similar issue with an ASUS Fan Extension card. I have been a user of Aida64 a while now but finally decided to make a sensor panel as I have a screen install planned into my PC. I am running on an ASUS X99-A motherboard and have case fans connected on the board at the CHA_FAN 1, 3, and 4 ports and 1 case fan so far connected to the extension card. It sees the 3 fans connected directly to the board and is also seeing the H115i Pro cooler fans and pump (the H115i fans are labeled as fans 21 & 22) but it will not see the extension fan. I am on version 6.32.5600 currently. I have posted my dump files below.
ecdump.txt
isasensordump.txt
smbusdump_full.txt