QDD-400G-SR8-S — QSFP-DD 400 Gbps

The Cisco QDD-400G-SR8-S is a 400 Gbps QSFP-DD module over multimode fiber (MMF), reaching up to 100 m. Its MPO-16 (APC) connector with parallel fiber cabling supports IEEE 400GBASE-SR8, 200GBASE-SR4, 100GBASE-SR2, 50GBASE-SR and several SL variants, offering broad multi-rate compatibility. It operates between 0 and 75 °C for data center environments.

This transceiver is designed for 400G links over MMF within a campus or between rooms up to 100 m, where the QSFP-DD VR4 reaches its limit at 50 m. The MPO-16 differentiates it from MPO-12 modules in terms of fiber density and compatibility with 16-fiber patch panels. Genuine Cisco hardware, manufacturer warranty.