Provide Cisco NCS1004 optical transport platforms with a 3.2 Tbps QSFP-DD DCO transponder for high-capacity wavelength transport. The SP-SNC-NCS1K4QU designation identifies licensed DCO transponder hardware associated with the NCS1004 platform. Its QSFP-DD interface and 3.2 Tbps capacity place it in dense optical transport designs where coherent transport optics are required. Digital coherent optics, or DCO, combines coherent optical transport capability with a pluggable QSFP-DD interface. This hardware fits NCS1004 systems that require a defined 3.2 Tbps transport optic rather than a lower-capacity interface. Match the installed platform and optical design to the NCS1004 and QSFP-DD requirements before installing the transponder in a transport system. The licensed DCO designation distinguishes this hardware as a specific NCS1004 optical transport component with a 3.2 Tbps capacity rating. It is also associated with the 8x7xNCD and SP AR HW designations. Integration should account for the coherent optical configuration, wavelength plan, and link engineering required by the transport network.