Supermicro X12SPL-LN4F Server Motherboard ATX, DDR4 8-DIMM, Intel Xeon – Network Hardwares
Upgrade your server with the Supermicro X12SPL-LN4F Server Motherboard. This ATX motherboard supports DDR4 memory and features 8 DIMM slots for a maximum memory capacity of 2TB. With its PCI-E and M.2 slots, you can expand your system's capabilities. The quad LAN ports provide reliable network connectivity.
Mainboard MSI MEG X299 CREATION
The DIMM slots on this motherboard have double-sided latches. ... Memory compatibility and supported speeds can vary depending on the CPU and memory configuration ...
MSI X58 Platinum Motherboard - OC3D
but only on the black slots, when populating the white slots standalone, the power button and motherboard flashes red lights and it beeps 5 short beeps, memory error.
[SOLVED] - RAM Positioning
The "Memory modules were found on non-optimized memory slot" error is caused by having 2 Rams and installing these Rams on your motherboard in a non-optimized way.