Keep long-reach 100 GbE links consistent across enterprise and data center environments. This Chelsio-compatible 100GBASE-LR4 QSFP28 transceiver is built for single-mode fiber deployments where reach, compatibility, and procurement requirements all matter. The LR4 specification is a practical choice for teams extending high-speed Ethernet beyond short-reach optics. Its QSFP28 form factor supports dense switching hardware, while the LC connector aligns with common single-mode fiber infrastructure. TAA compliance adds a procurement advantage for organizations that need traceable sourcing without compromising on network design. Use this module when you need a compatible replacement or expansion optic for Chelsio-based systems. It is a focused, production-ready option for 100 GbE links that must perform reliably in structured cabling environments and standardized network builds.