QDD-2X400G-FR4 — QSFP-DD800 800 Gbps

The Cisco QDD-2X400G-FR4 is an 800 Gbps QSFP-DD800 module capable of splitting into two independent 400G links over single-mode fiber up to 2 km. Compliant with the IEEE 400GBASE-FR4 standard, it uses a Dual Duplex LC (UPC) connector with dual duplex cabling, providing two LC fiber pairs for two distinct 400G links. Its temperature range of 0 to 75 °C targets standard data center environments.

This transceiver is particularly suited to spine-leaf architectures requiring 400G connectivity to multiple devices from a single 800G port, over short inter-room distances (up to 2 km on SMF). The SKU QDD-2X400G-FR4 delivers superior density and efficiency for structured interconnections. Genuine Cisco hardware, manufacturer warranty.