BlueOptics QSFP-100G-CU1M-BL InfiniBand fibre optic cable 1 m QSFP28 Black

The BlueOptics QSFP-100G-CU1M-BL InfiniBand fibre optic cable is a 1 m twinax direct attach cable with QSFP28 male connectors on both ends, designed for high-speed short-reach interconnects in data-centre and rack environments. It supports 100G data rates and is suitable for use with switches, servers and storage systems that accept QSFP28 direct attach copper assemblies. The cable offers low latency, low power consumption and a compact form factor for dense rack installations.

Advantages

This QSFP28 direct attach cable provides a cost-effective and energy-efficient interconnect for short-distance links. As a passive twinax assembly it requires no additional power for signal conversion and delivers low latency and stable electrical performance. The 1 m length is optimized for connections within racks or between adjacent racks, reducing clutter while preserving signal integrity. Compliance with common MSA electrical and mechanical specifications ensures broad interoperability with hardware platforms that support QSFP28 DACs.

Suitable for

• 100G connections between QSFP28 ports in the same rack
• Interconnects between adjacent racks and short data centre runs
• Linking switches, routers, storage arrays and servers with QSFP28
• Environments requiring low-latency, high-throughput links

Key specifications

• Connector type: QSFP28 male to QSFP28 male
• Length: 1 metre
• Media: Passive twinax copper (direct attach)
• Supported data rate: up to 100 Gbps
• Wire gauge: 30 AWG twinax
• Typical applications: Ethernet, FCoE, Fibre Channel, InfiniBand up to 100G
• Form factor: QSFP28 compliant MSA mechanical dimensions

How to use

Install the cable by firmly inserting each QSFP28 connector into the corresponding QSFP28 port on your devices until the connector latch engages. Use the 1 m length to connect ports within the same rack or between adjacent racks, avoiding sharp bends and excessive pulling. Verify that the host hardware and firmware support passive QSFP28 DACs and configure the interfaces according to your device vendor instructions. Monitor link status through your switch or server management interface to confirm successful negotiation at 100G.

Recommendations

For reliable operation, keep bend radius within the manufacturer’s specified limits and avoid running the cable near high-interference power sources. Ensure both endpoints support passive QSFP28 DACs and the intended protocols (Ethernet, FCoE, Fibre Channel, InfiniBand). For critical links consider testing a sample unit with your specific hardware and firmware versions prior to deployment.