QSFP28 - 100GBase-CLR4 Q28QL002C00D - Q28QL002C00D is a high performance QSFP28 transceiver module for 100 Gigabit Ethernet data links over a single mode fibre pair. The maximum reach is 2km. The four transmitters are uncooled CWDM Distributed Feedback (DFB) lasers generating four optical 25Gbps output signals, which are multiplexed together at the optical output port. The four receivers are PIN photodiodes which detect (after optical de-multiplexing) 4× 25Gbps optical input signals. This transceiver module is compliant with the QSFP28 Multisource Agreement (MSA) and hot pluggable.