As of 2018, some SnapStream appliances contain an Intel Ethernet Converged Network Adapter X710 Series. These adapters require a compatible SFP+ module for connectivity. More information about compatible modules can be found here: https://www.intel.com/content/www/us/en/support/articles/000007045/network-and-i-o/ethernet-products.html
Once you have connectivity, please review the Network Configuration article for SnapStream.
If you need any further assistance, please contact SnapStream support.