Most TV boxes come with WiFi and/or Ethernet to access the Internet or local network in order to stream videos, but there are a few rare exceptions with TV boxes also acting as router such as Zome ZMT-330A we covered way back in 2014 with two Ethernet ports.
Shenzhen Tomato informed me about another TV box router product dubbed Nut Link powered by Amlogic S905W processor and equipped with not two but three Ethernet ports. A quick web search reveals the device is better known as X96 Link and sells for as low as $39 shipped on sites like