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What are the LEDs on RJ45 connector for?

Fresh3 days ago
Mar 15, 202646209 views
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Problem

I just noticed (in fact a non-technical colleague of mine told me) that there are 2 LEDs on a RJ45 connector. I always thought there was only 1. Could somebody tell me what they're for? I'm pretty sure that the one on the right that flashes all the time indicates traffic but what about the left one…

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Fix for: What are the LEDs on RJ45 connector for?

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One of the LEDs is typically an "activity" indicator, so it will flash whenever data is being transmitted. The other LED is usually a "line speed" indicator and is typically orange for 10Mbit and green for 100Mbit line speeds. There may be another c…

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