Netgear has a number of wireless router models, but most have lights for power, Internet connection, DSL, wireless capability (which may be two lights for dual-band routers), Ethernet and WSP. The proper lighting of a Netgear wireless router, and any troubleshooting, can be found at Netgear's website, where users can look up their router models.
Netgear offers a few dozen router models with visual differences that include the LED symbols. The model number can be found on the side or bottom of the router, depending on its type. In the absence of a model number, images of the routers are available for comparison on Netgear's "products" page.