Supermicro X11SSL-F MicroATX Server Motherboard with Intel Xeon E3-1245 v6 and IO Shield included.

This motherboard works but only with 1 RAM DIMM in the first slot (top blue slot).

I used this board in my NAS for about 4 years before it started spitting out memory errors. I tested each RAM DIMM individually (I had 4 DIMMs in my system), they all passed a long MEMTEST86 test.

Each RAM DIMM worked individually in the first ram slot and the system would post. But as soon as you add another DIMM in the second blue slot, the board will not post citing a memory error.

I tried the same process with a different compatible processor (i3 7100) and got the same result. So it is most likely the second slot on the motherboard that is bad.