Keep high-speed backbone links stable over extended distances with this 100GBASE-ER4L QSFP28 transceiver for MikroTik. Built for long-reach single-mode deployments, it supports 100 GbE transport where short-range optics fall short and link margin matters. That makes it a practical fit for aggregation layers, campus interconnects, and data center runs that need more distance without stepping down bandwidth. The QSFP28 form factor helps preserve port density while delivering 100 Gbps throughput over LC duplex fiber. ER4L optics are chosen when you need stronger reach characteristics for critical uplinks, not just a lower-cost transceiver that works on paper. For infrastructure teams, that means fewer compromises when extending switch-to-switch or switch-to-server connectivity across larger facilities. Use this module when link reliability and reach are part of the design requirement, not an afterthought. It is a focused choice for environments that standardize on MikroTik hardware and need a 100 GbE optic aligned to long-distance single-mode transport.