3Com 1680-5 10Mb/s GBIC ST Transceiver Module

Product Description

The 3Com 1680-5 transceiver module is a GBIC (Gigabit Interface Converter) designed to provide 10Mb/s Ethernet connectivity over fiber optic cable. Although labeled as GBIC, the speed indicated is 10Mb/s, suggesting it might be an earlier iteration or a specific model intended for slower legacy connections within a GBIC-compatible slot. The inclusion of an ST connector signifies its use with the prevalent SC duplex or simplex fiber optic connectors common in enterprise networks of the past. This module allows network devices equipped with a GBIC slot to interface with fiber optic networks. The ST connector is a bayonet-style connector known for its secure physical connection, often used in multimode or single-mode fiber applications. The 10Mb/s speed indicates its suitability for less demanding network segments or older equipment that does not require higher bandwidths like Gigabit Ethernet. GBIC modules were precursors to modern pluggable transceivers like SFP and SFP+. They provided a standardized way to add network interface capabilities to network devices. The 3Com 1680-5, with its ST connector, would have been used to extend network reach, provide immunity to electromagnetic interference, and connect network segments over distances not achievable with copper cabling, all while operating at the 10Mb/s speed.