100G ER4
100G QSFP28 ER4
QSFP28 transceiver modules are designed for use in 100 Gigabit Ethernet links over single mode fiber.
They are compliant with SFF-8665, INF-8438i, IEEE 802.3bm,100G 4WDM-40 MSA. Digital diagnostics functions are available via an I2C interface, as specified by the QSFP28 MSA.