Disabled: all ports can communicate with each other, and monitoring optimization is disabled.
Enabled: downlink ports can only communicate with uplink ports; monitoring optimization is enabled, and transmission distance can be extended to up to 250 meters.
Link/Act (steady green): link is normal
Link/Act (flashing green): data is being forwarded
Link/Act (off): no link
PoE (steady orange): the port is powering a powered device properly
PoE (off): the port is not connected to any powered device or is not supplying power
Power (steady green): AC input is normal
Power (off): AC input is abnormal