first when i noticed was when the ll120 fans (i have 4 fans) started showing a light green color and i couldnt change it. i searched up on google that maybe fan order placement change could help and it showed me the faulty fan. cause the faulty one is the last port 4 and other ones at front 1, 2 and 3. So what should i do? and by the way i am not the original buyer.