The port combination with 1G ports, 10G multi-gigabit ports, and a 10G fiber port is capable of supporting a wide range of network devices such as the iMac Pro, 10G NAS, servers, WiFi 6 APs, or new 2.5G motherboards. An increasing number of new applications are driving the demand for higher network speeds. The multi-gigabit RJ-45 ports provide more speed options for your network. The built-in smart fan adjusts its speed based on device temperature and operates extremely quietly. The XGS1250-12 features essential functions such as VLAN, QoS, link aggregation, and port mirroring, and is compatible with IGMP Snooping v1/v2 and v3. Connections: 8 x RJ-45 10/100/1000 Mbps Ethernet ports, 3 x RJ-45 100M/1G/2.5G/5G/10G Ethernet ports, 1 x SFP+.