The SFP28 transceivers are high performance,cost effective modules supporting data rate of 25Gbps and Maximum link length of 10km on SMF. It designed for 25GBASE-LR Ethernet and 25.78125 Gb/s single lane 100GE LR4. They are compliant with compliant with SFF-8402 and SFF-8472, SFF-8432, SFF-8431 and IEEE 802.3by 25GBASE-LR, FCC 47 CFR Part 15, Class B, Telcordia GR-468-CORE.