IDS-509G-CSS120D Industrial Managed Switch, 9 ports: 8 x 10/100/1000Base-T Base-T RJ-45 ports and 1 x 1000Base-BX, 1550nm TX / 1310nm RX single strand single mode port with simplex (BIDI) SC connector [ 120km/74.6 miles ]. -10 to 60C operating temperature. PRO software feature set.