Applies to NetApp StorageGRID NetApp E-Series Controller rear 7-segment displays SE or 5E refers to start up error 23 refers to default boot device not found A USB device is connected to the type A co...Applies to NetApp StorageGRID NetApp E-Series Controller rear 7-segment displays SE or 5E refers to start up error 23 refers to default boot device not found A USB device is connected to the type A connector Controller appears offline and will be unresponsive in the shell, unless additional actions of releasing the lockdown are used. However, it likely will transition back to the condition after reboot For more details see E-Series E2700 with lockdown or outage 7-segment code SE 23