BlueOptics QSFP-4SFP10G-CU3M-EN InfiniBand fibre optic cable 3 m 4xSFP+ Black

The BlueOptics QSFP-4SFP10G-CU3M-EN InfiniBand fibre optic cable is a 3 m male-to-male assembly with one QSFP connector on one end and four SFP+ connectors on the other. It is intended for high-speed interconnects in data centres and enterprise networks where aggregated 40 Gbps links are broken out into up to four 10 Gbps channels. The cable’s design prioritises signal integrity and compact routing in rack and switch-side installations, providing a straightforward solution for connecting QSFP ports to multiple SFP+ ports without additional transceivers.

Advantages

This cable supports aggregated data throughput by converting a single QSFP interface into four independent 10 Gbps SFP+ links, enabling flexible port utilisation and simplified cabling. The 3 m length balances reach and manageability for short to medium rack distances, while the male-to-male connector configuration ensures plug-and-play compatibility with compatible QSFP and SFP+ ports. The construction focuses on stable electrical performance and resistance to typical data centre handling, offering consistent link quality for latency-sensitive and high-bandwidth applications.

Suitable for

• Breaking out 40 Gbps QSFP ports to up to four 10 Gbps SFP+ ports in switches and routers
• Direct connections between servers, storage arrays, and top-of-rack switches
• High-density cabling runs inside server racks and network equipment cabinets
• Short-reach InfiniBand or Ethernet links within data centre pods

Key specifications

• Connector configuration: 1x QSFP to 4x SFP+
• Length: 3 metres
• Supported per-channel data rate: 10 Gbps (per SFP+ channel), aggregated 40 Gbps
• Cable colour: Black
• Application: InfiniBand and compatible 10 Gbps Ethernet interconnects

How to use

Insert the QSFP connector into a compatible QSFP port and insert each SFP+ connector into the corresponding SFP+ ports on the target devices. Ensure ports are powered down or follow hot-plugging procedures recommended by your equipment vendor if inserting or removing connectors while systems are live. Verify link lights and device interface status after installation to confirm successful negotiation of 10 Gbps channels. Route the cable to avoid sharp bends and mechanical stress on connectors.

Recommendations

For reliable operation, use this cable within the specified 3 m range and avoid excessive bending radius near the connector ends. Confirm device compatibility with QSFP-to-4xSFP+ passive breakouts—some equipment requires explicit support for breakout mode. Where temperature control and electromagnetic conditions are critical, install the cable in accordance with data centre cabling best practices to maintain signal quality.