Industrial Ethernet Switch with 4x Ethernet Ports and 2x Fiber Ports. The NS-206F/NSM-206F is a 4-port unmanaged Ethernet with dual fiber port switch. Using fiber optics, you can prevent noise from interfering with your system and supports high-speed (100 Mbps) and high-distance (up to 15 km) transmissions.The NS-206F/NSM-206F provides a wide 10 to 30 VDC power range to fit all the common power standards found in industrial automation, without ex..