I use

https://altairtech.io/



https://altairtech.io/product/bitmain-antminer-s21-xp/. I buy these


my review is here

Rated 5 out of 5
Philip A. (verified owner) February 28, 2025
Had this dropped shipped to my host. It is my fourth s21xp works great.

I own 8 of them .


I host them here

https://iowamining.io/


and a 1% off code for altairtech.io  gear is

Iowa Mining

I know zero about cryptominerbros