I am porting my original designs from Thingiverse, below is the original description (https://www.thingiverse.com/thing:5091409)

I purchased a Xeon Phi on eBay that didn't have a PCIe backplate. As such I wasn't able to mount it within my system. This part can be screwed in using two M3 bolts and matching nuts.

More details about the Phi can be found on my website (https://aidancrowther.com/project/xeonphi)