BlueOptics Q28-4S28-DAC-2M-CN-BL Compatible Cumulus QSFP28 to 4x SFP28 Direct Attach Breakout Cable, 2m, Passive, AWG26

The BlueOptics Q28-4S28-DAC-2M-CN-BL is a high-performance, passive Direct Attach Breakout Cable designed for reliable 100G connectivity in data center and high-performance computing environments. This cable is fully compatible with Cumulus switches and NICs, providing a cost-effective solution for breaking out a 100GBASE-CR4 QSFP28 port into four independent 25GBASE-CR SFP28 links.

Advantages

This breakout cable offers significant advantages over traditional transceivers and fiber cabling. It provides a low-power, low-latency, and cost-efficient interconnect for short-range applications. The passive design ensures zero power consumption, while the breakout configuration maximizes port utilization and simplifies cable management. With a length of 2 meters and AWG26 gauge, it is ideal for top-of-rack to server connections.

Suitable for

• Data center interconnects
• High-performance computing clusters
• Enterprise network aggregation
• Storage area networks
• Any application requiring 100G to 4x25G breakout

Key specifications

• Cable Type: Direct Attach Cable (DAC), Passive
• Connector A: 1x QSFP28 (SFF-8665 compliant)
• Connector B: 4x SFP28 (SFF-8402 compliant)
• Data Rate: 100 Gbps aggregate (4x 25 Gbps per lane)
• Cable Length: 2 meters
• Cable Gauge: AWG26
• Ethernet Standards: 100GBASE-CR4 (QSFP28 end), 25GBASE-CR (SFP28 ends)
• Compatibility: Cumulus switches and NICs
• Material: Copper

Recommendations

For optimal performance, ensure that both ends of the cable are securely connected and that the host devices support the respective Ethernet standards. This cable is plug-and-play and requires no configuration. It is recommended for use within the same rack or adjacent racks to maintain signal integrity.