Industrial Ethernet Switch with 4x Ethernet Ports and 1x Fiber Port. The NS-205AF/NSM-205AF is a 4-port unmanaged Ethernet with 1 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 60 km) transmissions.The NS-205AF/NSM-205AF provides a wide 12 to 48 VDC power range to fit all the common power standards found in industrial automation, without ex..