Installation ManualH3C S7500 Series Ethernet Switches Chapter 4 Hardware Installation4-13Note:Pinouts 1 and 2 (negative), 3 and 6 (positive) are used for the external PoE powersupply.II. Connection procedureFollow these steps to connect a category-5 cable:1) Connect one end of the network cable to an RJ-45 Ethernet port on the switch.2) Connect the other end of the cable into an RJ-45 port on the peer device.4.7.5 Connecting FibersI. Introduction to fiber connectorBefore connecting fibers, make sure the connector and the fiber are consistent with theoptical port.Fiber connectors are indispensable passive components in optical fiber communicationsystems. Fiber connectors make it possible that fibers can be removable. As a result,debugging and maintenance of the optical system become more convenient, andtransfer dispatching more flexible. Among diversified fiber connectors, only SC and LCwill be introduced here.z SC fiber connectorFigure 4-13 SC connectorz LC fiber connectorFigure 4-14 LC connectorII. Connection procedureFollow these steps to connect an optical fiber1) Remove the protective cap from the fiber connector and clean the end-facesurface of the fiber.