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A comment on Mac Mini M1 Mod to Receive Power over Ethernet Instead of the AC Input. Parent comment

Re:Mac Mini M1 Mod to Receive Power over Ethernet Instead of... by consp on Wednesday August 02, 2023 @03:11AM (#36967931)
You would still need a DC to DC converter as lead acids deliver anywhere from 12.8 to about 10v depending on SoC and load.
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Re:Mac Mini M1 Mod to Receive Power over Ethernet Instead of... by windexh8er on Wednesday August 02, 2023 @10:00AM (#36971019)
Remember that DC to DC power supplies are much smaller because existing AC PSU has to deal with the transformer aspect.

I worked for an ISP that was also a CLEC back in late 90s / early 2000s. All of the telco side was DC (massive 48v battery banks) - so when we were doing server implementation it made sense to get all DC PSU on the servers. Not sure why DC PSU aren't a more universal option as you'd think UPS providers could easily offer DC output models.

There are options out there, I ran across this [0] looking for typical ATX DC to DC PSU.

[0] https://lazer3d.com/dc-dc-power-supply-guide/

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