100G QSFP28 optical Transceiver includes CWDM4, LR4, ER4 Lite, ER4, and ZR4 series for distances from 2km up to 80km.. The series uses LC or MPO optical connectors, and are compatible with IEEE 802.3bm, SFF-8636 SFF-8679 and other standards.  Supports QSFP28 hot-pluggability with low power consumption and small size, which increases data center capacity, improves port density, and reduces power consumption.  QSFP28 can be used in intra data center networks, data center interconnection, 100GE Ethernet or metro networks.