# Difference Between the Arduino Mini 5V and 3.3V

**URL:** <https://community.sparkfun.com/t/difference-between-the-arduino-mini-5v-and-3-3v/45218>\
**Category:** Arduino\
**Created:** [February 27, 2023, 6:58pm UTC](https://community.sparkfun.com/t/difference-between-the-arduino-mini-5v-and-3-3v/45218 "2023-02-27T18:58:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![aw\_rw1](https://avatars.discourse-cdn.com/v4/letter/a/858c86/32.png) [@aw\_rw1](https://community.sparkfun.com/u/aw_rw1)\
**Post date:** [February 27, 2023, 6:58pm UTC](https://community.sparkfun.com/t/difference-between-the-arduino-mini-5v-and-3-3v/45218/1 "2023-02-27T18:58:43Z")

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What is the difference between the Arduino Mini 5V and 3.3V? Could you modify a 5V for 3.3V operation?

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**Author:** ![TS-Russell](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-russell/32/6092_2.png) [@TS-Russell](https://community.sparkfun.com/u/TS-Russell)\
**Post date:** [February 27, 2023, 10:08pm UTC](https://community.sparkfun.com/t/difference-between-the-arduino-mini-5v-and-3-3v/45218/2 "2023-02-27T22:08:27Z")

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The product description reads “By default, the MiniGen ships configured with a 3.3V regulator enabled and should only be used with 3.3V signals (or 3.3V Pro Minis if you are using this as a shield) unless the jumper on the back is soldered over to bypass the regulator for 5V use.”

Go through the available info