What do the AP Ethernet port LED colors mean

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Green LED

Indicates that the uplink has negotiated the maximum supported speed of the access point’s Ethernet port.
The LED will turn green only when the connected switch, router, or PoE injector supports the AP’s highest link rate (for example, 2.5Gbps on certain AP models).

Amber LED

Indicates that the link is operating at a lower speed than the maximum supported rate, such as 10/100/1000Mbps.
This is normal behavior when the connected uplink device does not support the AP’s highest Ethernet speed.