What is the Ethernet port used for on the DIR-505?

In Router/AP mode, the Ethernet port is used to connect to your existing wired network (e.g. an existing router, a wired connection in a hotel room or Broadband Modem). 




In Repeater and Wi-Fi Hotspot modes, the Ethernet port is used to connect a wired client to the wireless network (e.g. computer, Smart TV, video game console).