Lenovo Legion Y9000X M.2 TB3 can't load GPU
The notebook I use is Y9000X, the configuration is as follows：
GPU：Intel(R) UHD Graphics 630
EGPU：GTX 1660 Super
The graphics card uses 300w power supply for independent power supply
Both the graphics card and the SSD box can be powered, but the graphics card cannot be found in the Device Manager, but the SSD box can be found.
我正在尝试使用iExtra X4板连接显卡，并通过PCIE X4连接拥有雷电3接口的M.2 SSD盒子，最后盒子使用雷电3与笔记本进行连接。
If possible, open up your laptop.
Use one of the two nvme slots that Y9000X has to test iExtra X4 board and your gfx card.
These would help you make sure that none of them defect first.