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

The BlueOptics SFP28-DAC-3M-IB-BL is a 3-meter SFP28 Direct Attach Copper (DAC) cable with SFP28 male connectors on both ends. Designed for short-distance, high-speed connections, this passive twinax copper cable supports 25G data rates and complies with SFP28 MSA electrical and mechanical interface specifications. The cable is intended for use in rack-to-rack and within-rack links in data centers and high-performance computing environments where a reliable, low-latency copper connection is required.

Advantages

This SFP28 DAC cable provides a cost-effective alternative to optical transceivers and fiber for short links, offering low power consumption and low latency due to its passive twinax design. The 3 m length is suitable for adjacent racks or within-rack connections and simplifies installation because it uses direct SFP28-to-SFP28 plugs. Built and tested to MSA-compatible specifications, the cable aims for broad interoperability with hardware that supports passive SFP28 DACs and is produced using high-quality components for consistent performance.

Suitable for

• Short-distance 25G connections between switches and routers in data center racks
• Direct links between servers and top-of-rack switches
• High-performance computing nodes requiring low-latency links
• Storage systems and network equipment that support SFP28 DAC passive connections

Key specifications

• Connector type: SFP28 male to SFP28 male
• Length: 3 meters
• Transmission rate: up to 25 Gbps per link
• Cable type: passive twinax copper (30 AWG conductors)
• MSA-compatible SFP28 electrical and mechanical interface
• Typical use: short-reach direct attach connections in rack environments

How to use

Install the cable by inserting each SFP28 connector into the corresponding SFP28 port on the networking devices until the latch engages. Ensure both devices support passive SFP28 DAC connections and the same transmission protocol (for example 25G Ethernet or compatible storage/network protocols). Route the 3 m cable to avoid sharp bends and mechanical stress; secure it within the rack to prevent strain on connectors. No external power or configuration on the cable itself is required, but verify link status and device settings after connecting.

Recommendations

Confirm hardware compatibility with passive SFP28 DACs and check vendor documentation for supported cable types before deployment. For optimal reliability, avoid tight bends (keep bend radius within manufacturer guidance), minimize mechanical stress on the connectors, and perform a link test after installation.