> For the complete documentation index, see [llms.txt](https://docs.cubepilot.org/user-guides/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cubepilot.org/user-guides/cubenode/cubenode-eth.md).

# CubeNode ETH

The CubeNode ETH provides networking capabilities to Cube Flight Controllers without Ethernet support. By enabling the PPP protocol on one of the serial ports (preferably with flow control) of The Cube, you can achieve up to 12Mbit/s networking link and transport multiple protocols (CAN, MAVLink) over the network without chewing multiple serial ports. <mark style="color:orange;">CubeOrange+</mark> and <mark style="color:red;">CubeRed</mark> running ArduPilot 4.5  or above release firmwares support the PPP protocol out of the box. <mark style="color:orange;">CubeOrange</mark>  and older Cubes built with networking enabled in the custom ardupilot build can support PPP protocol as well.