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If your base station’s light is flashing
The table below describes status light behaviour for AirPort Extreme, AirPort Express and AirPort Time Capsule.
AirPort light | Status/description |
|---|---|
Off | The base station is unplugged. |
Solid amber | The base station is starting up. |
Flashing amber | The base station can’t establish a connection to the network or the Internet, or is encountering a problem. A red badge may appear to provide more information. (See below.) |
Solid or flashing green | The base station is on and working properly. |
Flashing amber | There may be a problem starting up. The base station will restart and try again. |
If a red badge 
appears near a base station, a status message is available; click the base station to view the status message.
See alsoIf you can’t choose a Wi-Fi networkMonitor base stations for problems in AirPort Utility on Mac