Routers & Modems — All Indicator Lights
Decode every blinking, solid, and color-changing light on your router or cable modem. Covers Netgear, TP-Link, Asus, Xfinity, Arris, and more.
Signal reference index
Router Blinking Orange Light
No internet connection or the router is trying to establish a WAN connection
Router Solid Red Light
Critical error — hardware failure, firmware corruption, or no internet
Router Blinking White Light
Starting up, in WPS pairing mode, or receiving a firmware update
Router DS/US Lights Blinking (Cable Modems)
Modem is scanning for downstream / upstream channels — not yet connected
Router Solid Orange Light (Not Blinking)
WAN link is established but no internet — ISP issue or authentication failure
Router Blinking Blue Light
WPS pairing mode active, mesh node syncing, or device-specific status
Router Blinking Green Light
Normal activity — data is actively passing through this port or interface
Router All Lights Off — No LED Response
Router has no power, is in LED night mode, or has suffered a hardware failure
Router Blinking Red Light
Critical error — firmware failure, hardware fault, or complete connection loss
Netgear Router Lights Explained — All LED Colors & Patterns
Full reference guide for all Netgear router LED states
TP-Link Router Lights Explained — All LED Colors & Patterns
Full reference guide for all TP-Link router LED states
Asus Router Lights Explained — All LED Colors & Patterns
Full reference guide for all Asus router LED states
Xfinity Modem & Gateway Lights Explained
Full reference guide for all Xfinity gateway LED states
Arris Modem Lights Explained — DS, US, Online, Send, Receive LEDs
Full reference guide for all Arris modem LED states