multimode (1300nm) or single mode (1300/1550nm) Fiber Optic hub switch
MCSESM053F1CS0 - Modicon Managed Switch - 4 ports for copper + 1 port for fiber optic single-mode | Schneider Electric USA
SW1036A, Ultra Secure Singlemode A/B Switch - Black Box
Amazon.com: A Pair of 1.25G/s Bidi Gigabit Single-Mode Fiber Ethernet Media Converter with 2PCS Bidi SFP LC Transceiver Module Included, 10/100/1000Base-Tx to 1000Base-SX SMF RJ45 to SFP Slot up to 30KM :