QDD-400G-FR4-S — QSFP-DD 400 Gbps

The Cisco QDD-400G-FR4-S is a QSFP-DD 400 Gbps transceiver compliant with the IEEE 400GBASE-FR4 standard, designed for single-mode fibre (SMF) with a duplex LC (UPC) connector. It covers a reach of 2 km and operates across a temperature range of 0 to 75 °C, extending its application scope beyond the strict datacenter environment.

This module is intended for operators and enterprises that need to link two buildings or two machine rooms separated by distances of up to 2 km over an existing duplex fibre plant. The FR4 standard carries 400G over four WDM wavelengths without requiring parallel infrastructure. Genuine Cisco hardware, manufacturer warranty.