While using XMP at 3200 mhz it didnt post, rebooted few times then it was on 2133 mhz. The 2 sticks ware visible in the bios on slots A2 and B2, in windows 11 ware also visible but only 16 gigs ware available for use. I did a mem test and both sticks ware good, tried with 1 stick on both slots and it worked so its not a dead slot.