... auto MDI/MDI-X connection; 100BaseFX supports single-/multi-mode, SC/ST connector, optional.Ck-if11/21 adopt industry stard design, IP30 ... mode, and support MDI/MDI-X connectionFiber Ports: 100BaseFX ports (SC/ST connector, optional)Single-mode: 20, 40,60, 80, 120Km, ... S2*TP+1*fiber port,single-mode,20Km,12~36VDC,SC/FCSTPcsTransmission distance and single fiber is optinal optical fiber converter ...