QSFP28 transceivers encompass SR4, LR4, IR4 PSM, CWDM4 and BiDi series. Compliant with the subsequent standards and Protocols: • IEEE 802.3bm • SFF 8661 (QSFP+ 4X Module Specification) • SFF 8672 (4X 28Gb/s Connector) • SFF 8679 (QSFP+ 4X hardware and electric Specification) • SFF 8665 ( QSFP+ 4X 28 Gb/s Pluggable Transceiver answer) under we detail the several alternatives to be had whilst deciding on your qsfp28 transceiver module. 100G over Multimode Transmission 100GBASE-SR4 • Transmits over multimode (OM3 or OM4) at 850nm • helps a distance of up to 70m, over OM3 and 100m o...