10/100/1000TX-10/100/1000FX SINGLE FIBER (WDM) MANAGED MEDIA CONVERTER, SM-20KM, TX1550nm - RX1310nm FCS-3312WB-S2 IEEE 802.3 10BaseT, 802.3u 100BaseTX, 802.3ab 1000BaseTX & 1000BaseFX Store and Forward Switching Mechanism Auto-Cross over for MDI/MDIX in TP port Auto-Negotiation in TP port Support 4K MAC address Support 256K Byte Packet Buffer Support Power/Link Activity/FDX/Speed/Status LED Support Loop Back and Diagnostic Test Button Compatible with FSM-CHS2-AC Remote Module Management (by FCM-3312) Remote port management function (Remote) State Monitor - Model/Media/Link/Speed/Duplex/Activity/Power (Remote) Port Configuration - Auto/Speed/Duplex/Flow Control IN-BAND Diagnostic (Loop Back Test) Fiber Transceiver Information Plug-and-Play installation