QDD-400G-SR4.2-BD — QSFP-DD 400 Gbps

The QDD-400G-SR4.2-BD is a Cisco 400 Gbps QSFP-DD module compliant with the IEEE 400GBASE-SR4.2 standard, designed for very high-throughput interconnects over multimode fiber (MMF) up to 150 m. Its MPO-12 (UPC) parallel fiber connector supports 8 simultaneous full-duplex optical lanes, within an operating temperature range of 0 to 75 °C.

This transceiver targets hyperscale datacenter architectures and 400 Gbps switching environments that require short, ultra-high-density connections between switches or servers. The QSFP-DD form factor ensures backward compatibility with existing QSFP28 equipment. Genuine Cisco hardware, manufacturer warranty.