BlueOptics Dell EMC Compatible BlueLAN QSFP28 to 4xSFP28 Passive Direct Attach Copper Breakout Cable, 1m, Black

The BlueOptics Dell EMC DAC-Q28-4S28-25G-1M-BL is a high-performance, cost-effective direct attach copper (DAC) breakout cable designed for use in Dell EMC networking environments. This BlueLAN series cable connects a QSFP28 port to four SFP28 ports, enabling 100 Gb/s aggregate data rate (4x25 Gb/s per lane) over a 1-meter passive copper link. Ideal for InfiniBand and high-speed Ethernet applications, it is fully compatible with Dell EMC OEM part number DAC-Q28-4S28-25G-1M and offers reliable, low-latency connectivity for data centers and enterprise networks.

Advantages

This breakout cable provides a simple and cost-efficient solution for migrating from 25 Gb/s to 100 Gb/s infrastructure without replacing existing SFP28 ports. The passive copper design ensures low power consumption and zero latency, while the MSA compliance guarantees interoperability with standard QSFP28 and SFP28 interfaces. Hot-swappable capability allows for easy installation and maintenance without network downtime.

Suitable for

• Dell EMC switches, servers, and storage systems with QSFP28 and SFP28 ports
• InfiniBand and high-speed Ethernet networks requiring 100 Gb/s aggregate bandwidth
• Data center top-of-rack (ToR) and end-of-row (EoR) cabling
• High-performance computing (HPC) clusters and cloud infrastructure

Key specifications

• Cable Type: Direct Attach Cable (DAC) - Passive Copper
• Connector A: QSFP28 (male)
• Connector B: 4x SFP28 (male)
• Cable Length: 1 meter (3.28 ft)
• Data Rate: 100 Gb/s aggregate (4x 25 Gb/s per lane)
• Application: InfiniBand, High-Speed Ethernet
• Compatibility: Dell EMC (OEM part DAC-Q28-4S28-25G-1M)
• Color: Black
• Hot-Swappable: Yes
• MSA Compliant: Yes
• Product Series: BlueLAN
• Form Factor: Breakout Cable (QSFP28 to 4xSFP28)

Recommendations

For optimal performance, ensure that both the QSFP28 and SFP28 ports are compatible with passive DAC cables. This cable is not recommended for distances exceeding 1 meter; for longer runs, consider active optical cables (AOC) or fiber transceivers. Always verify compatibility with your specific Dell EMC hardware model before purchase.