Comment by eqvinox

Theoretically yes, practically that hasn't been built yet. I've only seen it for 2.5Gbase-T, and only for 802.3bt Type 3 (51W).

If anyone's aware of something better, I'd be interested too :)

(Then again I wouldn't voluntarily use 5Gb-T or 10Gb-T anyway, and ≈50W is enough for most use cases.)

[ed.: https://www.aliexpress.us/item/3256807960919319.html ("2.5GPD2CBT-20V" variant) - actually 2.5G not 1G as I wrote initially]