DL4II_Control VS MSIRGB

Do you mean understand the code or how the application works? If you have a DL4 MkII just connect it to your computer using an USB cable and download the application from the releases page.

There's an open-source alternative to the MSI RGB toolkit: https://github.com/ixjf/MSIRGB

Openrgb detects all my components except my motherboard, I was reading about the implementation of nagisa's msirgb and later found out that my motherboard isnt supported, but also tried ixjf/MSIRGB: Alternative to MSI Mystic Light for controlling motherboard LEDs, without the fixed 7 colour limitation. (github.com) which detects my motherboard but this is also a fork from nagisa's msirgb and it works, is it possible to get my motherboard supported somehow?

You can try https://github.com/ixjf/MSIRGB/releases instead of the MSI RGB software (don’t know if it still works)

Never used it myself but saw this mentioned some times: https://github.com/ixjf/MSIRGB

I have been having issues with *somewhat* random BSODs when plugging in/out USB devices like mouse/headset etc. I tried to install MSIRGB to get around having to use MSI's awful software to control my motherboard's LEDs and ever since this issue has been around. Has anyone had these issues in the past? Is there a specific file/location I should try and remove to fix this?

It's software limited (at least on my motherboard) because the RGB hardware supports custom colors through 3rd party programs. I use MSI RGB but it isn't being updated anymore so if you have a newer motherboard it probably won't work, check if yours is compatible by looking at the list available on the website

msiRGB too...you can download it from github

"GitHub - ixjf/MSIRGB: Alternative to MSI Mystic Light for controlling motherboard LEDs, without the fixed 7 colour limitation." https://github.com/ixjf/MSIRGB

What's your motherboard? See if it's supported by MSIRGB.

Have you given MSIRGB a try? It claims to support your board: https://github.com/ixjf/MSIRGB