Yes, As popatim has suggested, MSI gaming app is the best and only way to disable LED. Click on LED which is bottom right and turn it off.
No LED option in msi gaming app,or meybe i got the wrong version,download link?Can other apps do that or just msi
Same boat... my cyberpower PC has white LEDs on back of b250 & also has red leds on fans... both sets of lights are always on... the msi app or bios has no control 🙁