(Teach you to identify optical fibers and optical fiber modules, suitable for friends who have just entered the industry, hurry up and collect them 1. Module 1.1 Gigabit SFP module 1.1.1 Gigabit SFP module picture There are many kinds of mega modules, among which the following three are used the most: 1.2.1Cisco10GBASEX2Cisco10GBASEX2Modules related parameters)