Active Optical Cable BlueOptics QSFP-DD 400GBASE-SR8, Ethernet/Infiniband, 3 m

The BlueOptics Active Optical Cable QSFP-DD 400GBASE-SR8, 3 m, is a multimode AOC designed for high-speed Ethernet and InfiniBand interconnects. It combines a QSFP-DD connector and 400GBASE-SR8 optics to deliver short-reach fiber connectivity between switches, servers and high-performance computing (HPC) nodes. The 3 metre duplex assembly reduces electromagnetic interference compared with copper alternatives and is intended for dense rack deployments where space, signal integrity and low latency are priorities.

Advantages

This active optical cable provides high aggregate bandwidth with low latency, enabling reliable 400 Gbps links over multimode fiber without the need for separate transceivers and patch cords. The integrated design simplifies rack cabling and reduces connector count, while the optical medium lowers susceptibility to electromagnetic interference and crosstalk. The 3 m length balances reach and manageability for typical top-of-rack and switch-to-switch connections.

Suitable for

Key specifications

How to use

Insert each QSFP-DD plug into the appropriate QSFP-DD port on networking equipment or server adapters, ensuring the latch engages securely. Route the 3 m cable within the rack to avoid sharp bends and excessive stress on the cable assembly. No external transceivers or patching is required; the integrated cable contains the optical modules. Verify link status on connected devices and confirm proper speed and lane negotiation according to switch or host adapter diagnostics.

Recommendations

Handle the active optical cable by the connector housings and avoid bending the cable beyond the manufacturer’s minimum bend radius. Keep connectors clean and protected when not in use. For reliable operation in dense racks, plan cable paths to minimize strain and maintain airflow around equipment.