QSFP-DD (Double Density) has eight-channel electrical interfaces, with data transmission rates up to 28Gbps NRZ or 56Gbps PAM4, and total data rates up to 200Gbps or 400Gbps. QSFP-DD connectors and cable assemblies comply with IEEE 802.3bj, InfiniBand EDR and SAS 3.0 specifications, so they are suitable for various next-generation technologies and applications