Made this because the original needed wood pieces and I found out too late that I should have taken shop class.

Anyway, it fits Atx/microAtx/itx IIRC, also fit some old nonstandard optiplex mobo I had laying around, only fits Atx & smaller PSU's though, if its bigger you may have to sit it beside the testbench (see makes). It has one 3.5 hard drive slot and one 2.5 HDD/SSD slot.

The Motherboard holders slot on the pins on top, in the orientation shown in the picture, and can be moved around to fit different standards of motherboards.

This remix essentially just replaces the wood parts with plastic and removes the need for screws, the page for the original has a little more info if you have questions.