The CRS312-4C+8XG-RM is a Cloud Router switch with 10G RJ45 Ethernet ports. It also has 4 10G combo ports which can be used for 10G RJ45 Ethernet or 10G SFP+ for when you need an additional fibre connection. The combo ports can be used alongside the 8 regular 10G RJ45 Ethernet ports at all times. These ports can also be software selected so you can use RouterOS scripting to decide which combo ports should be active.

8x10GB RJ45, 4x10GB SFP+/RJ45 Combo ports, ROS L5, Dual AC PSU for redundancy