The QSFP28 100GBASE-LR4 module is designed for data transmission using two single-mode (SM) fibers. It transmits data at speeds of up to 100 Gbps, over distances of up to 10 km. FS 40G QSFP+ optical transceiver module solutions offer a full range of QSFP+ modules from 150m to 80km reach, and used for high-density switching, routing and data center applications. They are compliant with the QSFP-DD MSA and with CWDM4 MSA. To obtain a detailed certification certificate, please go to the product compliance status. The Quad Small Form-Factor Pluggable (QSFP) family represents a critical evolution in high-speed optical transceiver technology for data centers, telecommunications networks, and enterprise infrastructure.