HP MicroServer Gen8 Additional 2.5" Mount (SSD/HDD) by h0ly0ne on Thingiverse: https://www.thingiverse.com/thing:1279920

Summary:
First prototype of a 3d printed version for an additional mounting option for 2.5" drives. This prototype is based on an existing idea and comparable products of the HP MicroServer communities.SCAD file will follow when some "weak links" of the prototype are a bit more stable and offer more strength. The first version A is currently tested in my own microserver - currently works quite well for SSD drives.Used some M3 counter sunk screws from my screw-box ... just try what fits yourself best.