Prusa i3 MK2 S-240-12 power supply mount
thingiverse
I built an MK2 but used a different power supply than the Prusa one. I had a S-240-12 clone that was compact enough to work seamlessly on my printer with this new mount design. This setup utilizes the original PSU Y adapter provided by Prusa, requiring no modifications whatsoever. One short M3 screw (about 8-12mm) is all that's needed to get started. Here's an example of the S-240-12 it was designed for: https://www.amazon.com/Switching-Universal-Regulated-Transformer-Computer/dp/B0747KPXYW/ref=sr_1_3?keywords=s-240-12&qid=1576478583&sr=8-3
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