100G Parallel MMF 100m Gen3 QSFP28 Optical Transceiver FTLC9558REPM 100G QSFP28 transceiver modules are designed for use in 100 Gigabit Ethernet links over multimode fiber. They are compliant with the QSFP28 MSA and IEEE 802.3bm 100GBASE-SR4 and CAUI-4. Digital diagnostics functions are available via the I2C interface, as specified by the QSFP28 MSA and Application Note AN-2141. The optical transceiver is RoHS compliant as described in Application Note AN-2038.