when i was so embarassed to use EGPU in NUC.  finally ,i get some help by Mr. zhang to solve this problems .

        first, to be honest, i use those article to solve basic install

1. 在Ubuntu中使用雷电3外接显卡（eGPU）进行深度学习_Lumozzz的博客-CSDN博客_ubuntu 雷电3    
2. linux环境新NVIDIA-GPU服务器进行压力测试_毅强的博客-CSDN博客_linux六张显卡压测利用率稳定,八张显卡利用率浮动
3. if you have some question that you can inquire CSDN

        of couse !  if you get the EGPU can't use in show interface and the nvidia-smi not work, that's right.you can follow me to solve this problem:

1.       GitHub - hertg/egpu-switcher: 🖥🐧 Setup script for eGPUs in Linux (Xorg)
2.  i think this article is very good. you can run the manual code to install .
3. oh ! you need according to the mind to install . i just need to install golang environment.
4. finally, you just set your use EGPU to use .