400GBASE-XDR4 QSFP-DD with an extended reach DR4 (DR4+) transceiver, up to 2km over parallel SMF. The 400G-XDR4 can break out to 4 x 100G, and interop with 4 x 100G-FR QSFPs. Parallel SMF MPO-12 Angled Connector (APC) MSA Compatible
