hello ZolloZ170 , I am using server 6019U-TN4R4T, motherboard is X11DPU rev 1.1. I have 10 motherboards like this now, with a very strange problem. When I used 8272CL and 8275CL, there were 5 servers that could use 8272CL/8275CL directly. The remaining 5 servers are unusable (the CPU is not hot...