https://hackaday.com/2013/08/30/disabling-underover-voltage-protection-on-atx-power-supplies/
Disabling Under/over Voltage Protection On ATX Power Supplies | Hackaday
Aug 30, 2013 - [C] just recently put together a RepRap. Not wanting to spend the money on a dedicated power supply, he looked around for a cheaper solution and found one in...
under over voltageatx power suppliesdisablingprotectionhackaday