iDRAC card installation

Hi

I've ordered and installed a new iDRAC card (Enterprise license) in my PowerEdge R320 server. I've connected the port to my DMZ network.

However, there is no link on the port, no light flashing.

What do I have to do to activate the card? That server has an iDRAC Express embedded. Do I have to disable or uninstall it before the card is recognized?

Thanks