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So as you may know i've already designed 2 different xbox mini cases and I'm also working on a full replacement case. This design sits in between these two, it loses the DVD rom and uses a 2.5" HDD/SSD instead of the full sized HDD. It also keeps the original PSU. The lid incorporates ducting to guide air over the heatsinks and also holds the HDD/SSD. Sttill a work in progress but heres a quick look so far:

Hello everyone I have been working on a slim xbox build and have it 95% working the way it should with some off the shelf parts that are not the pico psu. The only sticky issue that is pretty minor is the switched power requirements. I don't really understand electronics that well past what I call a "blackbox" understanding. You know, I understand that the boards I use say they will take a certain voltage in and output whatever but no knowledge to build a more complex circuit for switching the reset line for the smc. I am using a meanwell psu that is rated for 5v20A that you can find in a lot of places on the internet. Then I am using two boards from Pololu. One to step up the voltage to 12v:https://www.pololu.com/product/2568 and another to knock the 5v down to 3.3v https://www.pololu.com/product/4090 I was wondering if you all could help me with a schematic or some understanding of how to switch on and off the 3.3v signals to help reset the smc. I have some idea that you could use some transistors maybe to accomplish this but I am not super sure. The goal here would be to use the above boards in custom pcb for future slim xbox builds. Sorry if this isn't super clear Here is the picture of my install and somewhat self evident why it could be better looking