SFP28 DAC Cable BlueOptics SFP28-DAC-3M 3m Male/Male

The BlueOptics SFP28-DAC-3M is a 3‑metre direct attach copper cable with SFP28 male connectors on both ends, designed for short‑reach 25 Gbps links in data centre and rack environments. As a passive twinax assembly, it provides a compact, low‑latency electrical connection for switches, routers, storage systems and other hardware platforms that support SFP28 DAC interfaces.

Advantages

This SFP28 DAC cable offers a simple, low‑power and low‑latency solution for 25G short‑reach connections. Its passive twinax design eliminates the need for active components in the cable, reducing power consumption and potential failure points. The cable is MSA‑compliant and built to industry wiring standards for reliable interoperability with major vendor platforms that accept SFP28 passive DACs.

Suitable for

• Short‑reach interconnects within racks and between adjacent racks
• 25G Ethernet, FCoE and InfiniBand links up to 3 m
• Connections between switches, top‑of‑rack devices and storage arrays

Key specifications

• Length: 3 metres
• Interface: SFP28 male to SFP28 male
• Performance: supports up to 25 Gbps per lane for short‑reach electrical links
• Cable type: passive twinax copper (30 AWG conductors)
• Colour: black
• Typical weight: 0.08 kg

How to use

Insert each SFP28 connector into the corresponding SFP28 port on your devices until the latch engages. Use this cable for direct electrical links where both connected devices officially support passive SFP28 DACs. Ensure firmware and port settings on the connected hardware are configured for 25G operation and verify link status through your device management tools. Avoid excessive bending and mechanical strain on the cable and connectors during installation.

Recommendations

For reliable operation, use the cable within racks and between adjacent racks at distances up to 3 metres, keep bend radius within manufacturer guidance, and verify compatibility with the host hardware. Passive SFP28 DACs depend on device support for passive assemblies; consult your equipment documentation before deployment.