Refurb Squared Cisco QDD-400G-LR4-S Compatible 400GBASE-LR4 QSFP-DD PAM4 CWDM4 Duplex LC 10km SMF FEC Optical Transceiver Module

Description

Refurb Squared delivers fully tested, OEM-compatible optical transceivers, DWDM/CWDM systems, media converters and DAC/AOC cables — coded for Cisco, Huawei, Juniper, Arista, HPE, Dell, Nokia and Fortinet platforms, with lifetime warranty and fast global delivery.

RS Cisco QDD-400G-LR4-S Compatible QSFP-DD LR4 400G Ethernet Optical Transceiver Module is the perfect solution for high-speed data center applications. It supports up to 400G of bandwidth over a single channel with up to 10km reach. This module features a Quad Small Form-Factor Pluggable œ Double Density (QSFP-DD) form factor with 4 CWDM4 lanes and 4-level Pulse Amplitude Modulation (PAM4) encoding. The optical transceiver uses a wavelength range of 1271 to 1331nm and is compliant with the Multi-Source Agreement (MSA) standard. The 400G QSFP-DD LR4 optical transceiver delivers ultra-high-density 400 Gigabit Ethernet connectivity for data centers and high-performance computing (HPC) networks. It supports long-reach interconnects between 400G QSFP-DD switches, enabling flexible, reliable, and efficient device-to-device connectivity across a wide range of deployment scenarios.

Refurb Squared is brand of OEM-compatible optical networking products, including SFP, SFP+, QSFP+, QSFP28 and QSFP-DD transceivers, DWDM/CWDM systems, media converters, and DAC/AOC cables. Every module is 100% pre-shipment tested and coded for seamless compatibility with major platforms such as Cisco, Huawei, Juniper, Arista, HPE, Dell, Nokia and Fortinet — backed by a lifetime warranty, fast global delivery, and dedicated technical support for data centers, telecom operators, enterprise networks and system integrators worldwide.