The PoE LED indicates the status of the PoE mode: either PoE or PoE+. None of the 10/100/1000 ports have been denied power or are in a fault condition. The lights on POE switches mainly include power indicator lights, system operation status lights, POE mode status lights, and business interface indicator lights. Their meanings are as follows: Power indicator light (PWR): Green constantly on: indicates that the power supply of the switch is normal. When a problem occurs with PoE, in most cases, the error symptom can be simply shown as the PoE switch not providing power, and the powered devices will stop working. For enterprise IT teams and engineers using Router-switch devices, these LEDs are often the first indicator of network health. Firmware Errors – Check on the device if there are any. Power over Ethernet (PoE) simplifies device deployment by delivering both data and power over a single Ethernet cable. However, when PoE fails, it can disable critical infrastructure like IP phones, wireless access points, and security cameras. This guide provides a step-by-step troubleshooting. This article provides troubleshooting information for common Power over Ethernet (PoE) problems with NETGEAR PoE switches. PoE is a networking feature defined by the IEEE 802.