Network Cable BlueLAN QSFP28-4SFP28-DAC-2M QSFP28 to 4x25GBASE-CR SFP28 Direct Attach Breakout Cable 2m Blue

The BlueLAN QSFP28-4SFP28-DAC-2M is a passive 100GBASE-CR4 direct attach breakout cable that links a single QSFP28 port to four SFP28 ports. At 2 meters length and constructed with AWG26 conductors, the cable supports aggregated 100 Gbps connections while providing individual 25 Gbps lanes for each SFP28. It is designed for short-reach, high-density interconnects in networking equipment where low latency and reliable signal integrity are required.

Advantages

This QSFP28 to 4xSFP28 DAC offers a compact, cost-effective alternative to fiber or active optical solutions for short-distance connections. Passive construction eliminates the need for external power, reduces heat and complexity in rack deployments, and simplifies installation. AWG26 wiring and a 2 m length balance flexibility with minimal crosstalk, delivering consistent 25 Gbps per lane performance suitable for top-of-rack switches, servers, and aggregation devices.

Suitable for

• High-density switch-to-server connections in data centers
• Aggregation of four 25 Gbps SFP28 links into a single 100 Gbps QSFP28 port
• Short-reach interconnects inside racks or between adjacent cabinets
• High-performance computing clusters and storage networking

Key specifications

• Connection type: QSFP28 to 4 × SFP28 breakout
• Standard: 100GBASE-CR4 (aggregate), 25GBASE-CR per lane
• Length: 2 meters
• Cable gauge: AWG26
• Construction: Passive copper direct attach
• Typical use: Short-reach, high-density interconnects

How to use

Connect the QSFP28 end to the 100G port on your switch or host adapter and plug the four SFP28 ends into the corresponding 25G ports on target devices. Ensure equipment supports passive DAC breakouts and that port firmware or operating system recognizes breakout mode where applicable. Install with gentle bends; avoid sharp kinks and maintain recommended bend radius to preserve signal integrity. No external power or additional transceivers are required for operation.

Usage recommendations

Use this cable for short-distance rack-level connectivity where passive, low-latency links are acceptable. Verify compatibility with your network hardware's breakout capabilities before deployment. For distances beyond typical rack-level spans or where longer reaches are needed, consider active optical cables or fiber-based transceivers instead.