# RGB or ARGB Header - MB Build
**URL:** https://community.frame.work/t/rgb-or-argb-header-mb-build/78302
**Category:** Framework Desktop
**Created:** [November 26, 2025, 5:49am UTC](https://community.frame.work/t/rgb-or-argb-header-mb-build/78302 "2025-11-26T05:49:31Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Xansul](https://community.frame.work/u/Xansul)
#### Post date: [November 26, 2025, 5:49am UTC](https://community.frame.work/t/rgb-or-argb-header-mb-build/78302/1 "2025-11-26T05:49:32Z")
Hello all,
Can anyone confirm for me if the mainboard uses a 12V 4 pin RGB header, or a 5V 3 pin ARGB header?
I’m looking to purchase the MB for a custom build, and I’m finding conflicting info about the header. To clarify, I’m not asking about the PWM header, but the single RGB/ARGB header.
In addition, what are our options for adjusting the fan curves for case fans? Is it all through the BIOS?
Thanks folks!
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### Author:  [@FW4TeePee](https://community.frame.work/u/FW4TeePee)
#### Post date: [November 26, 2025, 6:04am UTC](https://community.frame.work/t/rgb-or-argb-header-mb-build/78302/2 "2025-11-26T06:04:38Z")
> [@Xansul](#):
>
> Can anyone confirm for me if the mainboard uses a 12V 4 pin RGB header, or a 5V 3 pin ARGB header?
The description [here](https://github.com/FrameworkComputer/Framework-Desktop/blob/main/Mainboard/FRAMEWORK_DESKTOP_MAIN_PCB_V0.pdf) says “3 pin”
> [@Xansul](#):
>
> In addition, what are our options for adjusting the fan curves for case fans? Is it all through the BIOS?
Yes, BIOS
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### Author:  [@Camilo\_Reyes](https://community.frame.work/u/Camilo_Reyes)
#### Post date: [November 26, 2025, 6:17am UTC](https://community.frame.work/t/rgb-or-argb-header-mb-build/78302/3 "2025-11-26T06:17:55Z")
> [@FW4TeePee](#):
>
> The description [here](https://github.com/FrameworkComputer/Framework-Desktop/blob/main/Mainboard/FRAMEWORK_DESKTOP_MAIN_PCB_V0.pdf) says “3 pin”
You almost had me fooled! It’s definitely four pin. If you zoom into the PDF you can count the number of pins.
I only know because I purchased some back up fans just in case and thought I was hallucinating.
EDIT: WAIT, the ARGB connector is 3 pin but the main fan has four pin. I think it physically has four but you can only connect three for the ARGB.
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### Author:  [@FW4TeePee](https://community.frame.work/u/FW4TeePee)
#### Post date: [November 26, 2025, 6:39am UTC](https://community.frame.work/t/rgb-or-argb-header-mb-build/78302/4 "2025-11-26T06:39:49Z")
Yeah, I should have bolded, for emphasis, “ **description** ”