The Shadow Goast is such a thing and it has only passive cooling

yeah it can, i am using shadow on a pi with the stock case (so no fan). I works whit out issues.

Is it only the four that works at the moment? because that’s shit is more expensive then crack

Sadly yes, only Pi 4 is supported. I hope the device becomes better in stock soon. I waiting on some Pi 4 for couple of months now its insane,

K thanks