PS-ON Signal
{{Short description|Type of power connector}}
PS-ON Signal is a pin on a 20-pin or 24-pin ATX-specified power connector used to turn a personal computer power supply unit on/off. The PS_ON pin is normally pulled high in an open-circuit, but will turn on the power supply when it is pulled low, by shorting it to the GND (COM) terminal. Conversely the power supply is turned off when the PS-ON is in open-circuit. {{cite web|title=SG6516 PC Power Supply Supervisors|url=https://www.fairchildsemi.com/datasheets/SG/SG6516.pdf|work=Fairchild Semiconductor|archive-url=https://web.archive.org/web/20180821093928/https://www.fairchildsemi.com/datasheets/SG/SG6516.pdf|accessdate=August 21, 2018|archive-date=2018-08-21}}{{cite web|title=Desktop Platform Form Factors Power Supply Design Guide|url=https://www.intel.co.jp/content/dam/www/public/us/en/documents/design-guides/resellers-power-supply-design-guide-changes.pdf|work=Intel Corporation|accessdate=August 21, 2018}}
The PS_ON pin can be jumpered to manually turn a PSU on.{{Cite web |title=How to Jump a PSU {{!}} bit-tech.net |url=https://bit-tech.net/guides/modding/how-to-jump-a-psu/1/ |access-date=2023-12-11 |website=bit-tech.net |language=en}}
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