In the world of high-speed networking, we often focus on the "brain" (the switch) or the "connector" (the transceiver). However, there is a silent hero mounted directly to the PCB that makes high-speed data transmission possible: the SFP Cage.
If you’ve ever wondered why these ports are made of specialized metal or why they get so hot during 10G transfers, you’re in the right place. This guide breaks down the four vital functions of an SFP cage and why hardware quality is non-negotiable for network stability.
