Yeah these are good but a bit optimistic to run at 140 watts.
Medium speed is really good.
I am doing a long term test of my two one at medium speed and 1 at high speed.
I found the highest end psu that works it is this one. it is a grade above the oem psu
https://www.amazon.com/Laptop-Charger-Adapter-Precision-5-893A/dp/B0CL2LL47R/ref=sr_1_3?If you want a asic sha 256 miner that is low cost this is the one you want as it is very low cost and looks cool.