?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. ?Connectors&Cables?100GBASE-PSM4 QSFP+ transceivers adopt MTP/MPO-12 Male connectors and use 12 fibers single mode fiber cables G.652 SMF up to 500m with MPO connectors. as for 25G to 100G network upgrade connection, 8-core SMF builds four independent channels (4 for transmitting and 4 for receiving) for 100Gbps optical interconnects, and the transmission rate of each channel is 25 Gbps. ?Breakout 4x25G?100GBASE-PIR4 QSFP28 transceivers use 12 fibers single mode MTP Type B trunk cables for direct connection, and as for 25G to 100G network speed upgrade connection, 10 fibers single mode MTP-LC Type B harness cable can be applied. ?100G QSFP+ PSM4?100GBASE-PSM4 QSFP+ transceiver module, 12 Fibers MTP/MPO Male connectors, up to 500m on single mode Fiber (SMF), long distance transmission over singlemode fiber 1310nm. Hot Pluggable, QSFP28 MSA and RoHS-6 Compliant and DDM support, I2C management interface. Class 1 FDA Laser Safety. 0°C to 70°C(32 to 158°F). ?Wide Compatibility?It's fully compliant and compatible for Brocade QSFP28 MSA IEEE 802.3bm 100GBASE-PSM4 standards, coding as Brocade 100G-QSFP28-PIR4-500M.