Fiber Switch 1,10/100/1000M or 10/100M 2,singlefiber or dule ... fibers 3,1 or 2 fiber interface,2-8 electric interfa 4,Switch ... two sets of optical transceiver are interfaced or connected to switch with fiber interface, the fiber is in cross connection ... ). 2. ConnectionThe network device (work station, hub or switch ) with RJ-45 interface is connected to RJ-45 ...