Connect a 400G QSFP-DD interface to four QSFP56 connections across a fixed 10 m optical assembly. This breakout topology consolidates four downstream QSFP56-side connections at one QSFP-DD-side connection rather than requiring separate point-to-point cable runs. The active optical construction places the optical interconnect in a factory-terminated cable assembly with a defined connector combination and reach. QD44Q-AO10M-NO-AX is specified as a Nokia-compatible 400GBASE-AOC cable. Its QSFP-DD-to-4x-QSFP56 connector layout is the critical fit criterion: the host-facing end and breakout ends must match the planned equipment ports before installation. The 10 m length supports interconnect paths where rack-to-rack or within-row routing needs more distance than a short patch cable. The defining characteristics are the 400GBASE-AOC designation, one QSFP-DD connector, and four QSFP56 breakout connectors. It is a purpose-built breakout cable rather than a same-connector optical assembly, making the endpoint count as important as the cable length. Select it where the physical port topology calls for a QSFP-DD host connection and four QSFP56 connections at the far end.