QSFP-400G-DR4-S — Cisco QSFP-DD 400G

The QSFP-400G-DR4-S is a Cisco transceiver in QSFP-DD (Double Density) form factor, reaching 400 Gigabit Ethernet via four parallel lanes over single-mode fibre. This DR4 module is optimised for long-distance links on MPO-12 fibre, typically up to 500 metres, positioning it as the solution of choice for inter-datacenter interconnects or DCI links across extended campuses.

Targeted at very high-capacity spine-leaf architectures, cloud operators, and hyperscale datacenters, the Cisco QSFP-400G-DR4-S enables consolidation of existing 4x100G links into a single 400G port, simplifying cabling and reducing power consumption. Genuine Cisco hardware, manufacturer warranty.