Silicom

https://www.silicom-usa.com/cats/edge-networking-solutions/edge-cpes/

https://en.wikipedia.org/wiki/Silicom

 Silicom is a member of the RAD Group family of companies

Silicom RCC-VE 4C:    https://www.silicom-usa.com/pr/edge-networking-solutions/edge-cpes/rcc-ve-cpe-desktop-appliance/

Madrid C044 Interface name: 

enp2s0f0 /  f1

enp3s0f0 / f1

enp4s0f0 / f1