A 100M fiber optic transceiver is a hot-pluggable network component that converts electrical signals into optical signals and vice versa, enabling data transmission over fiber optic cables at Fast Ethernet speeds (100Mbps). In the vast ecosystem of network infrastructure, the humble 100M optical transceiver (or 100M SFP module) remains a critical workhorse for enterprise access layers, industrial networks, and legacy system upgrades. Choosing the right one, however, can be a complex puzzle of compatibility, fiber. 100M SFP vs 1G SFP vs 2. Whether the network speed can be improved depends on whether the router is the bottleneck of the network speed. Two key factors define length limits: Attenuation: The loss of signal strength as it.