... . Ck-if11 supports 1 TP ports 1 fiber ports, Ck-if21 supports 2 TP ports 1 fiber ports. TP(RJ45) support 10/100Base ... FCC, CE, RoHS approvals Part No.Descriptionunitif11-M1*TP+1*fiber port,multi-mode,2Km,12~36VDC,SC/FCSTPcsCi- ... -mode,2Km,12~36VDC,SC/FCSTPcsCk-if11-S1*TP+1*fiber port,single-mode,20Km,12~36VDC,SC/ ... FCSTPcsCi-if21-S2*TP+1*fiber port,single-mode,20Km,12~36VDC,SC/ ...