Ethernet ports use LEDs to communicate link and activity status: Solid Green (Link) – Connection established and stable. Amber / Orange (Solid or Blinking) – Indicates slower speed, configuration mismatch, or minor. Understanding the lights on your network or Ethernet ports is essential for maintaining a stable and reliable network. For enterprise IT teams and engineers using Router-switch devices, these LEDs are often the first indicator of network health. You can also monitor the status of the fan tray assembly and the power supplies. The LED colors for the switch and their corresponding status indications are as follows ; To Select or change a mode, press the mode button until the desired mode. In today's networked world, RJ45 connectors are found in almost every Ethernet-based system—from office routers to industrial switches.