Network Cable BlueOptics FN-CABLE-QSFP28-4SFP28-50CM QSFP28 DAC 50cm Blue

The BlueOptics FN-CABLE-QSFP28-4SFP28-50CM QSFP28 DAC 50cm Blue is a direct attach copper cable engineered for short-reach, high-bandwidth interconnects in data center and enterprise network environments. At 50 cm length it provides a low-latency physical connection supporting 100G Ethernet links between QSFP28 and four SFP28 ports or compatible breakout configurations. The cable’s durable jacket and molded connectors are designed for frequent handling and tidy rack installations where signal integrity and predictable performance are required.

Advantages

This QSFP28 DAC cable offers a compact, energy-efficient alternative to optical transceivers for short distances, reducing power consumption and heat compared with active optics. Its direct attach design simplifies installation with plug-and-play connectivity and eliminates the need for separate transceivers and fiber patch cords. The blue outer jacket aids cable identification and organized cable management in rack and patch panel setups.

Suitable for

• Intra-rack or adjacent-rack 100G connections in data centers
• Server-to-switch and switch-to-switch links using QSFP28 to SFP28 breakout
• High-performance computing clusters and storage area networks
• Test labs and equipment racks requiring short, reliable copper interconnects

Key specifications

• Form factor: QSFP28 to 4× SFP28 direct attach copper (breakout DAC)
• Supported data rate: 100 Gbit/s aggregate (compatible with 4×25G channels)
• Length: 50 cm
• Connector types: QSFP28 plug and SFP28 plugs
• Cable jacket color: blue
• Transmission medium: copper, passive direct attach
• Typical use range: short-reach interconnects within rack or between adjacent racks

How to use

Ensure both endpoints support QSFP28 and SFP28 breakout configurations and that the switch or adapter firmware is compatible with passive DAC cables. Power down or follow hot-plug guidelines of your hardware when inserting or removing modules if recommended by the device manufacturer. Align the QSFP28 connector with the port, insert until it seats securely, then connect the SFP28 plugs to the corresponding ports. Route the cable to avoid sharp bends and excessive strain; maintain bend radius guidelines specified by your equipment vendor.

Usage recommendations

For reliable operation, use this cable for short-distance links within racks or between immediately adjacent racks. Verify compatibility with your switch and server vendors’ supported cable lists and ensure firmware is up to date. Avoid exceeding recommended bend radius, minimize mechanical stress on connectors, and maintain a clean environment to preserve contact quality.