?Reliable Assurance?All of our products have gained TUV, UL, CE, FCC, RoHS, REACH, FDA professional certifications; tested by different projects,such as Temperature Cycling,Mechanical Vibration,ESD HBM,EMC,Cyclic Moisture Resistance and Fit&MTBF etc.; and programmed by various brands of the latest and advanced networking switches or other equipments to ensure the reliability. ?Transmission?QSFP28 Optical Transceiver Module is designed for use in 100GBASE Ethernet throughput up to 2km over single mode fiber (SMF) with duplex LC connectors. The 100 Gigabit Ethernet signal is carried over four wavelengths at 1271, 1291, 1311, 1331 nm. The wavalength is 1310nm but still support 1311nm. ?Connector&Cable?100GBASE-CWDM4 QSFP provides 100GBase-CWDM4 throughput up to 2km over single-mode fiber (SMF) using a duplex LC/UPC connector. 100G CWDM4 module can be connected to 1310 special port of CWDM MUX for signal transmission, CWDM4 QSFP uses 4 different CWDM channels at 1271, 1291, 1311, and 1331nm. ?100GBASE-CWDM4?100GBASE-CWDM4 QSFP28 Optical Transceiver Module (SMF, 1271nm, 1291nm, 1311nm and 1331nm, 2km, LC, DOM), hot Pluggable LC duplex connector, easy to install, hot swappable transceive, Max. 3.5W Power Consumption, I2C interface with integrated DDM and Host FEC, Single +3.3V power supply. support real-time configuration. ?Wide Compatibility?It's fully compliant for Dell networks theQSFP28 MSA, SFF-8665, SFF-8636, IEEE 802.3ba, IEEE 802.3bm, 100G CWDM4 MSA, and ITU-T G.694.2 standards, compatible for Dell QSFP-100G-CWDM4 Q28-100G-CWDM4.