The 400GBASE-DR4 module supports link lengths of up to 500m SMF with MTP/MPO-12 connector. It is compliant with QSFP-DD MSA, IEEE 802. 3bs protocol and 400GAUI-8 standards. The 400 Gigabit Ethernet signal is carried over four parallel lanes by one wavelength. QSFP28-DR-100G. When combined with higher transmission rates per electrical interface (28 Gbps to 56 Gbps to 112 Gbps), QSFP-DD optical transceivers can. Quad Small Form-Factor Pluggable Double-Density (QSFP-DD) offers twice as many high-speed electrical interfaces as QSFP28 while maintaining the same port density. With its compact form factor, backward. QSFP-DD offers top-of-the-line bandwidth density and the flexibility of backwards compatibility with lower-speed QSFP pluggable modules and cables, making it one of the most popular choices for high-speed data centers and networks. As a leading solution in high-speed applications, QSFP-DD. QSFP28 end can work in QSFP28, QSFP56, QSFP-DD/Q-DD ports. Only the QSFP28 end is supported.
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