Disable the LED on a g203 mouse

last updated: Oct 27, 2025

I'm annoyed by the bright LED on my Logitech g203 mouse, but I also refuse to install Logitech drivers which are consistently awful, so I had just accepted that I'd have to be annoyed by it.

Until today! I got annoyed enough that I looked around and found out that somebody already figured out how to do it, and with a little tweaking I was able to use their solution on my mac to disable the LED without installing a driver.

Here's what I ended up with after a few minutes of hacking:

That's it! Thank you very much to the open source goblins who figured this out.

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