BlueOptics SFP28-DAC-3M-GM-BL InfiniBand fibre optic cable 1 m Black

The BlueOptics SFP28-DAC-3M-GM-BL InfiniBand fibre optic cable 1 m Black is a short-range direct attach cable with SFP28 male connectors on both ends, designed for high-speed connections in racks and between adjacent racks. It supports 25G data rates and is suitable for Ethernet, FCoE, Fibre Channel and InfiniBand applications when used with compatible SFP28 ports. The cable is manufactured to meet MSA electrical and mechanical specifications and is intended as a compact, low-latency link for data centre hardware that accepts passive SFP28 twinax connections.

Advantages

This SFP28 direct attach cable provides a cost-effective and energy-efficient connection method for short-distance links. As a passive twinax solution it requires no active components, resulting in low power consumption and low latency. The cable follows industry MSA standards for interoperability and is assembled using components from established suppliers to provide reliable signal integrity and an extended operational lifetime.

Suitable for (tasks / use cases)

• High-speed links between switches and routers within a rack or across adjacent racks
• Server-to-switch and storage-to-switch short-distance connections
• 25G Ethernet, FCoE, Fibre Channel and InfiniBand interconnects
• Environments where low latency and low power consumption are required

Key specifications

• Connector type: SFP28 male to SFP28 male
• Length: 1 metre
• Nominal data rate: up to 25 Gbit/s
• Cable type: passive twinax copper (DAC) suitable for short-range electrical transmission
• Wire gauge: 30 AWG
• MSA-compliant electrical and mechanical interface
• Low power consumption and low latency typical of passive DAC solutions

How to use

Install the cable by inserting each SFP28 connector into the corresponding SFP28 cage on your compatible devices until the connector latches. Confirm that the host hardware and firmware support passive SFP28 DAC cables and the required 25GBase-CR protocol. For best performance, route the cable to avoid sharp bends and mechanical stress and ensure the connected devices are powered and configured for the intended link speed and protocol.

Recommendations

Verify device compatibility before deployment and, if possible, test a sample in your specific hardware and software environment. Use passive SFP28 DACs for short distances inside racks or between adjacent racks; for longer runs consider active DACs or optical transceivers with appropriate fibre.