4-port 10/100Base-TX RJ-45 with auto MDI / MDI-X function 1-port 100Base-FX interface for up to 2 km 1-port 100Base-FX interface for up to 15 km Complies with IEEE 802.3, IEEE 802.3u 10/100Base-TX, 100Base-FX Ethernet standard Backplane (Switching Fabric): 1 Gbps IP-30 metal case / protection DIN rail and wall mount design