Network Cable BlueLAN XQ+BC0002-XS+ QSFP28 to 4xSFP28 100G 1m Blue

The BlueLAN XQ+BC0002-XS+ QSFP28 to 4xSFP28 100G 1m Blue is a passive Direct Attach Copper (DAC) cable engineered for short-reach, high-bandwidth interconnects in data center and networking racks. With a single QSFP28 plug on one end and four SFP28 plugs on the other, this 1-metre cable supports a native 100 Gigabit link split into four independent 25 Gigabit channels, allowing seamless connectivity between QSFP28 ports and SFP28 ports without requiring optical transceivers.

Advantages

This BlueOptics DAC cable provides low-latency, power-efficient connectivity suitable for top-of-rack and adjacent-rack links. Its passive copper construction eliminates additional power consumption associated with active cables, while the integrated multiple SFP28 outputs increase flexibility when connecting equipment with different port types. The compact 1 m length reduces cable clutter and helps maintain airflow in densely populated racks.

Suitable for

• Connecting QSFP28 ports to multiple SFP28 ports within the same rack
• Short-reach 100G to 4x25G aggregation links between adjacent racks
• Server-to-switch and switch-to-switch high-density interconnects

Key specifications

• Connector configuration: QSFP28 to 4 × SFP28
• Data rate: 100 Gbps (split to 4 × 25 Gbps channels)
• Length: 1 metre
• Cable type: Passive Direct Attach Copper (DAC)
• Use case: Short-reach, rack-to-rack interconnects

How to use

Ensure both network devices support passive QSFP28-to-SFP28 breakout connections before installation. Power down or follow hot-plug guidelines specified by your hardware vendor, align the QSFP28 connector with the corresponding port and insert until it seats firmly, then insert each SFP28 connector into the respective SFP28 ports. Verify link status and port configuration on connected devices to confirm successful negotiation of 25 Gbps lanes.

Usage recommendations

Use this 1 m passive DAC cable for short, direct connections where optical transceivers are not required. Keep the cable free from sharp bends and avoid excessive strain on the connectors. For distances beyond short-rack interconnects or where electrical isolation is needed, consider optical alternatives.