If the switch has an SFP slot: insert the correct duplex SFP (for dual-fiber) or BiDi SFP (for single-fiber). Match speed and wavelength to the converter's optics. Test for Link and pass traffic. FX LINK/ACT: fiber link up / activity. If other core diameters are used, you can change the focal points. Connect a fiber optic. In this article, we'll explain how to connect multiple Ethernet switches using fiber optic cables and the equipment required for this to work. Network topology refers to the way in which the links and nodes of a network are arranged in relation to each other. In this comprehensive guide, we will delve into the operation and installation of multimode fiber optic switches, shedding light on their importance and benefits. To facilitate these changes, you must first contact Customer Support and obtain a Return Merchandise Authorization (RMA) number. Page 8 About This Manual 000-10000-040-02-0505. Chapter 1. It has three control modes: Onboard Switch; TTL; USB (Virtual COM) with a user-friendly GUI WindowsTM program supporting UART commands.