100G QSFP28 SR4Dell 100Gigabit Ethernet, coding as Dell QSFP28-100G-SR4 ^^ 100GBASE-SR4 QSFP28 transceiver module, 100Gbps, multi mode, 850nm, 100m, MTP/MPO connector, full-duplex, Hot Pluggable, support DOM ^^ Protocols100GBASE-SR4 and CAUI-4. Digital diagnostics functions are available via the I2C interface as specified by the QSFP28 MSA. ^^ 3 Warranty30-Days Free-returned, 65-Days Free-replacement 5-Years Free-maintenance ^^ CustomizationFibermall supports regular custom service for your options