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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 dheera on Wednesday August 02, 2023 @02:24AM (#36967642)
I mean, one of my hats that fried one of my Pis was a Waveshare hat. This one actually

https://www.amazon.com/gp/product/B0974TK3KD/

PoE operates at a pretty high voltage (almost half of line voltage!) and Waveshare products aren't UL listed.

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Re:Mac Mini M1 Mod to Receive Power over Ethernet Instead of... by NavinF on Wednesday August 02, 2023 @01:44PM (#36974233)
>PoE operates at a pretty high voltage

No, it operates at ELV (extra-low voltage): https://en.wikipedia.org/wiki/Extra-low_voltage

The whole point of PoE, 48V PD USB-C, and similar tech is that they don't need to be UL listed. PoE is also electronically current limited unlike mains power so you can't pull 200A to start a motor nor can you start fires without a lot of effort. That's assuming you use a real PoE switch that negotiates power levels, not cheap passive injectors.

Anyway that hat has some bad reviews claiming DoA, missing components, and dead Pis. Why not get the official hat? https://www.raspberrypi.com/products/poe-hat/

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