Table 1. LED descriptions
DescriptionLED
• Solid amber.The modem router is starting.
• Blinking amber.The firmware is upgrading, or the Reset button was pressed.
• Solid white.The modem router is ready.
• Blinking white.The firmware is corrupted.
• Off. Power is not supplied to the modem router.
Power
• Solid white.The Internet connection is ready.
• Solid amber.The modem router detected an Ethernet cable connection to the modem.
• Blinking white.The port is sending or receiving traffic.
• Off. No Ethernet cable is connected between the modem router and the modem.
Internet
The following is the LED behavior if the modem router is connected to a 4G network:
• Solid blue. Signal strength is good or fair.
• Solid green. Signal strength is weak.
• Blinking blue or green. Data activity is occurring.
The following is the LED behavior if the modem router is connected to a 3G network:
• Solid amber. Signal strength is good or fair.
• Solid red. Signal strength is weak.
• Blinking amber or red. Data activity is occurring.
3G/4G
• Solid white.The 2.4 GHz WiFi radio is operating.
• Blinking.The modem router is sending or receiving WiFi traffic.
• Off.The 2.4 GHz WiFi radio is off.
2.4 GHz WiFi
• Solid white.The 5 GHz WiFi radio is operating.
• Blinking.The modem router is sending or receiving WiFi traffic.
• Off.The 5 GHz WiFi radio is off.
5 GHz WiFi
Hardware Setup
10
Nighthawk AC1900 WiFi LTE Modem Router