---
tag: m0080
title: Power On
brief: Turn on the power supply
author: thinkyhead
contrib: AnHardt, Drachenkaetzchen

group: control
requires: PSU_CONTROL

codes: [ M80 ]
related: [ M81 ]

notes:
- A `PS_ON_PIN` is also required. Check your board's pins file for the default.
- For Marlin 1.1.9 and earlier this feature is enabled by `POWER_SUPPLY`.
- Some octoprint plugins filter out M80/M81. If M80 does not work, use a plain serial terminal first prior reporting a bug.

parameters:

- tag: S
  optional: true
  description: Report Power Supply state

example:
- code: M80 ; power on

---

Turn on the high-voltage power supply. Requires a board that's powered from USB or another 5V source.
