Based on https://www.thingiverse.com/thing:6331579. A nice design, but the posts seem to break. This design eliminates the posts. If you print 2 copies, one can be flipped upside down and act as a lid for the first - similar to the concept for https://www.thingiverse.com/thing:1773329 but with a bit more space/clearance for the SO-DIMMs.