Finisars FTLC9558REPM 100G QSFP28 transceiver modules are designed for 100 Gigabit Ethernet links over multimode fiber. They are compliant with the QSFP28 MSA1 and IEEE 802.3 bm 100GBASE-SR42 and CAUI-42. Digital diagnostics functions are available via the I2C interface, as specified by the QSFP28 MSA1 and Finisar Application Note AN-21413. The transceiver is RoHS-6 compliant.