MCX353A-FCBT MELLANOX CONNECTX-3 40GB not working Debian 11

I bought the following product. In Debian 11 the operating system automatically sees the driver. But no Connection between the Two computers no light. My other PC is Windows 11 and the same card and the driver is installed on it. Do I need to do something on the Debian 11 side. This model seems to be infiniband but I know it has ethernet mode.

Network controller: Mellanox Technologies MT27500 Family [ConnectX-3]

Hello alper.aykut,

Thank you for posting your inquiry on the NVIDIA Developer Forum - Infrastructure and Networking - Section.

For changing the port_type on the ConnectX-3 VPI adapter, please review the following URL → ESPCommunity

Thank you and regards,
~NVIDIA Networking Technical Support

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