# The ethernet ports not work

**URL:** <https://forum.aim-linux.advantech.com/t/the-ethernet-ports-not-work/856>\
**Category:** Technical Supports\
**Created:** [September 20, 2024, 6:18am UTC](https://forum.aim-linux.advantech.com/t/the-ethernet-ports-not-work/856 "2024-09-20T06:18:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Hideo\_Nakajima](https://avatars.discourse-cdn.com/v4/letter/h/9f8e36/32.png) [@Hideo\_Nakajima](https://forum.aim-linux.advantech.com/u/Hideo_Nakajima)\
**Post date:** [September 20, 2024, 6:18am UTC](https://forum.aim-linux.advantech.com/t/the-ethernet-ports-not-work/856/1 "2024-09-20T06:18:35Z")

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I create the image referencing [[How-to Article] Get started with ROS on Yocto](https://forum.aim-linux.advantech.com/t/how-to-article-get-started-with-ros-on-yocto/129)  
I flash the image created above to EPC-R3720. It worked.  
But ethernet ports on EPC-R3720 are not working.

How do I enable the ethernet ports?

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**Author:** ![charles.huang](https://avatars.discourse-cdn.com/v4/letter/c/76d3ee/32.png) [@charles.huang](https://forum.aim-linux.advantech.com/u/charles.huang)\
**Post date:** [September 20, 2024, 6:46am UTC](https://forum.aim-linux.advantech.com/t/the-ethernet-ports-not-work/856/2 "2024-09-20T06:46:10Z")

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I guess the board is the new one with a new version of ethernet phy. This BSP of ROS you use is based on the old one. Please check with our local region support team for professional support.

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**Author:** ![Hideo\_Nakajima](https://avatars.discourse-cdn.com/v4/letter/h/9f8e36/32.png) [@Hideo\_Nakajima](https://forum.aim-linux.advantech.com/u/Hideo_Nakajima)\
**Post date:** [September 20, 2024, 7:07am UTC](https://forum.aim-linux.advantech.com/t/the-ethernet-ports-not-work/856/3 "2024-09-20T07:07:48Z")

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@charles.huang  
Thank you for your reply.  
I will contact our local support team.