InfiniBand/fibre optic cable BlueOptics TAPCABLE28-50CM-BL 0.5 m SFP28 Male/Male

The BlueOptics TAPCABLE28-50CM-BL is a 0.5 m InfiniBand/fibre optic direct attach cable with SFP28 male-to-male connectors designed for short-range high-speed connections. It supports 25GBase-CR class transmissions over a 0.5 meter passive twinax link and is MSA-compliant for physical and electrical interoperability with SFP28 ports. The cable is intended for use in rack-level links between switches, servers and storage systems where a compact, low-latency copper direct attach solution is required.

Advantages

This BlueOptics SFP28 direct attach cable provides a compact, low-power and low-latency connection for short-distance links. As a passive 25G twinax cable it requires no active electronics, keeping power consumption and failure points to a minimum. The cable is manufactured to MSA mechanical and electrical specifications and uses high-quality components to achieve consistent performance and long service life for rack and adjacent-rack interconnects.

Suitable for

• Short-range connections between switches, routers and servers within racks or adjacent racks
• 25 Gigabit Ethernet, FCoE and InfiniBand links up to 25 Gbit/s on 0.5 m distance
• High-density data centre patching and top-of-rack interconnects where low latency is required
• Replacement of OEM SFP28 DAC connections in systems that support compatible passive DAC cables

Key specifications

• Length: 0.5 m (50 cm)
• Connector type: SFP28 male to SFP28 male
• Transmission: Passive twinax copper for 25GBase-CR class
• Wire gauge: approx. 30 AWG twinax conductors
• Compliance: MSA-defined SFP28 DAC electrical and mechanical specifications
• Typical use: short-distance rack-level interconnects with low latency and low power consumption

How to use

Install the cable by inserting each SFP28 connector into the corresponding SFP28 port on the network devices until the connector latch engages. Ensure that both devices support passive SFP28 DACs and the selected transmission protocol (for example 25G Ethernet or InfiniBand). Avoid sharp bends and excessive pulling force on the cable; maintain the minimum bend radius recommended by the vendor. For best results, power down ports only if required by your hardware maintenance procedures and follow any platform-specific guidance for link negotiation and firmware compatibility.

Recommendations

Use this 0.5 m SFP28 direct attach cable for short, permanent rack-level links where passive twinax reduces latency and power use. Verify platform compatibility with passive SFP28 DAC cables and, where possible, request a test sample to confirm full functionality in your hardware environment.