post4d5V PCI interface (not compatible with ALIX.1C ALIX.1D). During power on self-test (POST), most PC BIOSes will write diagnostic codes to port 80h or port 84h (jumper selection). Use post4dLosing my mind here. 4d is mentioned nowhere in the manual, and i've been without a PC for about a month now due to my 9800x3d breaking during the holidays, and