InfiniBand/fibre optic cable BlueOptics UACC-DAC-SFP28-0.5M-BL 0.5m Male/Male

The BlueOptics UACC-DAC-SFP28-0.5M-BL is a 0.5 meter Direct Attach Cable (DAC) with SFP28 Male-to-Male connectors, designed for short-distance high-speed links in data centers and enterprise racks. This passive 25GBase-CR twinax copper cable conforms to SFP28/MSA form factors and uses 30 AWG conductors to carry electrical signals for Ethernet, FCoE, Fibre Channel and InfiniBand applications up to 25 Gbit/s over a half-meter span. The cable is intended for reliable interconnections between switches, routers, storage systems and other network hardware that support SFP28 passive DACs.

Advantages

The cable offers low-latency, low-power passive operation and a compact twinax design suitable for dense rack deployments. Passive construction eliminates the need for active electronics in the cable, reducing power consumption and potential points of failure. Manufacturing to industry MSA standards and the use of high-quality components contribute to long operational life and consistent compatibility with major hardware platforms that accept SFP28 passive DACs.

Suitable for

• Short-range 25 Gbit/s links in data center racks
• Inter-shelf and adjacent-rack connections between switches and routers
• Direct connections to storage systems and host adapters supporting SFP28
• Environments requiring low-latency, low-power physical links

Key specifications

• Cable type: Passive twinax copper (DAC)
• Connector type: SFP28 Male to SFP28 Male
• Data rate: Up to 25 Gbit/s
• Length: 0.5 meter
• Wire gauge: 30 AWG
• Standards: SFP28/MSA compliant

How to use

Install the BlueOptics UACC-DAC-SFP28-0.5M-BL by plugging each SFP28 connector into compatible SFP28 ports on the two devices to be linked. Ensure both devices support passive DAC SFP28 modules and that firmware or vendor restrictions do not block third-party passive cables. Route the cable cleanly to avoid sharp bends and mechanical strain; maintain recommended bend radius for twinax cables. No external power or transceiver configuration is required on the cable itself.

Recommendations

Confirm hardware compatibility with the device vendor and check port settings or firmware requirements before deployment. For reliable long-term operation, avoid tight bends, secure the cable to prevent movement in high-vibration areas, and perform link tests after installation to verify 25G connectivity.