. The Dell™ QSFP28 transceiver delivers fiber connectivity to extend the range of your network. This hot-pluggable transceiver with QSFP28 (Quad Form Factor Pluggable) footprint features a MPO-12 connector. The Dell networking 100 Gb E-SR4 QSFP28 transceiver provides 100 Gb E connectivity up to 100 m. Additionally it provides a unique enhanced digital diagnostic monitoring interface which allows real-time access to device operating parameters such as transceiver temperature laser bias current transmitted optical power received optical power & transceiver supply voltage..