Keep high-capacity links open across longer fiber runs with a 100GBASE-LR4 QSFP28 transceiver designed for single-mode deployments. This AddOn module delivers 100 GbE connectivity in a compact QSFP28 form factor, making it suitable for switch uplinks, data center interconnects, and backbone paths that need dependable optical reach. Built as a Cisco compatible, TAA compliant transceiver, it supports procurement requirements where sourcing and platform alignment matter as much as link performance. The LR4 optical design is the right choice when multimode optics are not enough and you need to preserve signal integrity over longer distances on SMF infrastructure. For teams standardizing on 100 GbE, this module helps simplify expansion without changing the physical footprint of the switch or router. It is a practical fit for environments that need to scale bandwidth while keeping optics consistent across racks, rows, and remote aggregation points. When the network has to carry more traffic without compromise, long-reach single-mode optics are the right layer to invest in.