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That's the power level indicator. Green is regular level, red means it needs to be charged, the rest of the time during use, it shouldn't illuminate at all. If you're using the Logitech Options software, it should tell you the power level as well.
Sorry, there was a problem. Please try again later.Hello, your keyboard will let you know when it is running low. From 100% to 11% your LED will be green. From 10% and below, the LED will be red.
Sorry, there was a problem. Please try again later.Blinking red means the battery is low. I don't know about the other two. I haven't seen those.
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