Connectors and Cages
QSFP-DD plug is the same height and width as the 4-channel QSFP56 and QSFP28 used for 200G and 100G systems, but longer to support two rows of 4-channel electrical pins
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Connectors and Cages
QSFP-DD is not used for InfiniBand systems as of 2023 and not for 100G-PAM4 Ethernet systems. QSFP-DD cages in switches can accept QSFP112, QSFP56, and QSFP28
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QSFP-DD introduces enhanced thermal management capabilities through riding heat sinks that can be optimized independently of the optical