TP-Link’s TL-SM321A adopts the latest standard 1000Base-BX transmission over a single strand of fiber with one different wavelength going in each direction. You can extend the network distance up to 10Km with TP-Link’s routers switches media converters to provide high speed and stability. Please note: networking components such as switches routers UPS and wireless devices require that speeds & standards be consistent throughout the network to gain optimum performance. To avoid compatibility clashes or for advice please contact us on solutions@ebuyer.com.