IDS-205G-CSS120U Industrial Managed Switch, 5 ports: 4 x 10/100/1000Base-T Base-T RJ-45 ports and 1 x 1000Base-BX, 1310nm TX / 1550nm RX single strand single mode port with simplex (BIDI) SC connector [ 120km/74.6 miles ]. -10 to 60C operating temperature.