This update focuses primarily on "productionization", including design simplification and improvements to part commonality.
A new design for the fan header board was made to use the same 4-pin headers as on the motherboard, simplifying the wire harness from the motherboard to this PCB.
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A new method of mounting the fan was experimented with. Four posts were added that the fan slides over, with the intent of using a custom-made soldering iron tip to "mushroom" the ends over and keep the fan in place. The fan was also changed to a less expensive off-the-shelf part.
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Threaded brass inserts were added for the four socket-head cap screws that hold the case together. Another custom-made soldering iron tip was machined in order to install these brass inserts in the tight space.
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Some cleaning up was done around the front panel USB board. SMT 0805 production-ready components replaced the larger through-hole and 1206 prototypes. A previous version of the board had failed due to absorbing a shock of static electricity, so an ESD protection chip was added to prevent component damage.
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