This got me thinking again about one box power supply solution for multiple AC and DC devices. My idea is to use a metal enclosure, similar to Nu-Brick 64 Power Supply, and fit it with one or two dual 9V transformers (for two or four separate AC outputs) and one 5V DC power supply. I want it to be a modular PS with detachable power cords. This would eliminate even further unnecessary cable clutter, you would use only cables for the devices you want to power at the given time. It would also allow for a custom length of those cords and give you more freedom of what plugs you want to use (for example 2.1x5.5 or 2.5x5.5 barrel).
I have a problem finding a suitable connector on the power supply side. I want something that has 4 pins and has a threaded nut for better mechanical stability. 4 pins would allow me to have the same 5V DC connected to all outputs (for example pins 1 and 2), you could connect a DC device to any of the outputs. Pins 3 and 4 would be connected to 9v AC transformer, each output to a separate winding. Right now I'm considering M12 connector https://nianyeong.en.taiwantrade.com/product/wp-m12-f-4pin-d-coded-rear-lock-solder-type-lock-pg9-1786727.htmlbut they can get expensive. Does anyone have any other recommendations?
Single transformer version would have 2 AC outputs (shared with 5V DC) and 1 DC only, two transformer version would have 4 AC and 1 DC. How about adding one USB-A socket for additional 5V DC output (for SDrive Max)?
I want to make it user proof if I will ever want to sell it.