Provide the optical interface required at the GPON optical line terminal with a compact SFP transceiver. This module installs in an SFP-capable OLT interface and serves the OLT side of a passive optical network, where one central platform distributes services across the fiber access plant. Its GPON-specific role makes it an optical-network component rather than a general Ethernet SFP. The Class C+ designation is the key selection characteristic for access networks engineered around that GPON optical class. Network engineers can use the module where the OLT optic, passive split architecture, fiber plant, and subscriber-side optical equipment have been planned for a Class C+ GPON link. It provides a removable optical interface, allowing an OLT platform to be populated or serviced without replacing the complete system. TP-Link Omada DS-PMA-C+ is intended for OLT-side GPON deployment, not for a typical switch-to-switch fiber uplink. Confirm that the target OLT provides an appropriate SFP transceiver slot and that its GPON optical interface requirements match the Class C+ designation. This distinction matters in fiber access designs because the optical module must match both the active OLT platform and the passive network architecture.