... Media Converter Easy to connect server, repeater, switch, network switch Description: Ck-if11/21 Series is a ... connection; 100BaseFX supports single-/multi-mode, SC/ST connector, optional.Ck-if11/21 adopt industry stard design, ... MDI/MDI-X connectionFiber Ports: 100BaseFX ports (SC/ST connector, optional)Single-mode: 20, 40,60, 80, ... is optinal optical fiber converter/repeater network switch ck-if11-m