This message was posted on behalf of Intel Corporation
Thank you for joining the Intel® Community. I can definitely help you with this matter.
I did a research for the specifications of your processor and noticed that this model is intended to be used for Embedded platforms, in my research I also noticed that this processor is a Tray unit. These two facts indicate that this unit was meant to be distributed to computer manufacturers, it should not be distributed to the general public, and this is basically the reason why you are unable to find a compatible motherboard for the processors. I searched in our internal tools, but I couldn't find any compatible motherboard for the same reason mentioned before.
Here you can check the full specification for this particular computer model: Intel® Xeon® Processor E5-2418L v3 (15M Cache, 2.00 GHz) Product Specifications