QNAP CAB-DAC30M-SFP28 InfiniBand/fibre optic cable 3 m QSFP28 Black

The QNAP CAB-DAC30M-SFP28 InfiniBand/fibre optic cable 3 m QSFP28 Black is a 3-metre direct-attach cable with QSFP28 connectors at both ends, engineered for high-throughput, low-latency connections in rack, server and switch environments. It supports reliable data transfer for storage arrays, high-performance computing clusters and virtualised network infrastructures where low latency and consistent bandwidth are required.

Advantages

This cable provides a compact and durable connection solution that minimises signal loss and reduces latency compared with longer or passive copper alternatives. The QSFP28-terminated design enables 100Gbps-class links when used with compatible ports, offering stable performance for sustained workloads. The 3-metre length balances reach and cable management in dense rack installations while the robust jacket protects against wear and accidental strain.

Suitable for (tasks / use cases)

• High-performance computing clusters and InfiniBand fabrics
• Interconnecting 100GbE-capable switches and network adapters
• Direct-attached storage or SAN links in data centre racks
• Latency-sensitive applications such as virtualization and database replication

Key specifications

• Connector type: QSFP28 on both ends
• Length: 3 metres
• Supported interface: InfiniBand / fibre optic compatible QSFP28 ports
• Typical use: high-speed direct-attach connections between switches, servers and storage
• Colour: black

How to use

Insert each QSFP28 connector into the corresponding port on the networking devices until the connector latches. Ensure devices are compatible with QSFP28 and configured for the intended link speed and protocol. Route the cable in the rack or cabinet to avoid tight bends and secure it with cable management ties if required. After physical connection, verify link status and speed in device management interfaces and adjust link settings or firmware as needed to achieve expected performance.

Recommendations

For optimal results, use this cable in matched QSFP28-capable ports and keep bend radius within manufacturer guidelines. Avoid excessive tension and repeated flexing; check link health after installation and when adding or removing equipment. Use appropriate airflow and cable management to maintain cooling and accessibility in dense installations.