Yeah, not the conversion to make it less noisy though. Mine is in an office basement and I don’t find it too noisy, especially under-clocked. The biggest thing I do want to do is change out the smaller power supply fan, as that has an annoying higher pitch to it.

Yes, works well. Ran them as heaters for a long timr. S9 hardware is getting old though and starting to see lots of failures. Started switching over to S19's running a single board, with a water cooling plate, and PC radiators and pumps for cooling. Huge leap in efficiency and hashrate. If you can ...

Yup T15 S9SE S17 S19 AMA https://www.thehodler.info/mining.html

Yes! I really like the ac infinity fans with the s9