Supporting IEEE802.3u 100base-FX standards. Supporting full-duplex and half-duplex and its auto-sensed. Supporting conversion between 850nm/1310nm multi-mode fibers and 1310nm/1550nm single mode fibers. Supporting direct and transparent transmission of packets at different lengths. Supporting the transmission of extra-long VLAN packets. Supporting Quality of Service (QoS) and ensuring the transmission of VoIP packets. Supporting STP to form a redundant network. Low power consumption, low heat, reliable and stable performance, and long lifetime. Options in single mode in dual fiber, multi-mode in dual fiber, and single mode in single fiber.