QSFP28 Optical Transceivers Search our QSFP28 optical transceivers QSFP28 transceivers are optical modules that are built for 100G connections. The short-range version of QSFP28 transceivers are multimode fiber connections that can reach up to 100 meters. The long-range version of QSFP28 supports single mode fiber connections that reach up to 10 kilometers. Search our QSFP28 optical transceivers