Cable CBO CBL-QSFP-40GE-2M-F1 40Gbps QSFP+ to QSFP+ 2 m

Direct-attach copper cable BlueOptics CBL-QSFP-40GE-2M-F1 delivers a 40Gbps QSFP+ to QSFP+ connection over a 2-metre length. Engineered for short-reach, high-bandwidth links, this cable provides a low-latency physical layer between compatible switches, servers and storage systems in data centre racks. The product is intended for environments that require reliable 40Gb connectivity with minimal configuration and easy deployment.

Advantages

The cable offers a fixed, pre-terminated QSFP+ to QSFP+ assembly that eliminates the need for separate transceivers, reducing component count and simplifying installation. Its copper direct-attach design ensures low latency and consistent 40Gbps throughput for short distances, while the 2 m length provides flexibility for typical rack and cabinet layouts. Passive construction requires no external power or cooling and is compatible with equipment that supports QSFP+ copper links.

Suitable for

• Server-to-switch or switch-to-switch short-reach interconnects within the same rack or adjacent racks
• High-throughput links between storage arrays and compute nodes
• Top-of-rack aggregation in data centres and network closets
• Temporary test setups and lab environments requiring reliable 40Gb connections

Key specifications

• Connector type: QSFP+ to QSFP+
• Maximum data rate: 40 Gbit/s
• Cable length: 2 metres
• Media: direct-attach copper (DAC)
• Latency: low, suitable for short-range high-performance links
• Power: passive (no external power required)

How to use

Insert each QSFP+ connector into the corresponding QSFP+ port on your devices until the connector latch engages. Verify link status through device LEDs or management interfaces and confirm the ports are configured for 40Gb operation. For best signal integrity, route the cable without excessive bends and avoid tight bends near the connector. If compatibility or link negotiation issues occur, check device firmware and QSFP+ copper support settings.

Recommendations

Use the cable for short-distance, high-bandwidth links inside racks or between adjacent racks. Maintain bend radius guidelines to avoid mechanical stress, and store connectors with dust covers when not in use. Confirm equipment compatibility with QSFP+ DACs and update device firmware if required to ensure full 40Gbps operation.