mini-PCIe extender for multi-port NIC

Hi,

Do you have any idea for an industrial adapter that can connect to the mini-PCIe port on the NX and provide PCIe x1-x4 slot?

We would like to extend the dev-kit with additional 2/4 ethernet ports, such as:
https://www.advantech.com/products/35c86691-2936-4c3c-a071-ed9447e51918/96nic-1g4p-pe-in2/mod_cd6a2516-e5d0-4636-9da2-9dbcd34bf1c2

Or any other Intel I350/580 chipset.

Any equivalent solution would be as good.

Thank you!

Moti.