Welcome to the Manjaro community @ImE
I’m sure you have probably already done a lot of searching to no avail. I’ve just done some looking around too, and it looks like the MasterCTRL application is definitely Windows-only. However, others here may be more familiar with Cooler Master machines & be able to offer further advice.
This Reddit thread: How to change LCD images via Linux : r/coolermaster has a reply from 8 months ago which does mention:
The openrgb package can be installed from Manjaro’s extra repo:
pamac install openrgb
or
sudo pacman -Syu openrgb
pamac info openrgb
❯ pamac info openrgb
Name : openrgb
Version : 1.0rc2-6
Description : Open source RGB lighting control that doesn't depend on manufacturer software
URL : https://gitlab.com/CalcProgrammer1/OpenRGB
Licenses : GPL-2.0-or-later
Repository : extra
Installed Size : 7.9 MB
Groups : --
Depends On : glibc libgcc libstdc++ qt5-base libusb hidapi mbedtls hicolor-icon-theme
Optional Dependencies : i2c-tools: mainboard & RAM access [Installed]
Provides : --
Replaces : --
Conflicts With : --
Packager : George Hu <integral@archlinux.org>
Build Date : Tue 31 Mar 2026 00:58:30
Validated By : MD5 Sum SHA-256 Sum Signature
There are also a lot of openrgb plugins available from the AUR which can add extra functionality:
Note: before using the AUR, please be aware that it is not officially supported by Manjaro. You should also read through the following before installing any AUR packages: