BlueOptics QSFP28-4SFP28-DAC-1M Compatible BlueLAN Passive 100GBASE-CR4 QSFP28 to 4x25GBASE-CR SFP28 Direct Attach Breakout Cable, 1 Meter, AWG26 (Q28-4S28-DAC-1M-IA-BL)

The BlueOptics Q28-4S28-DAC-1M-IA-BL is a high-performance passive Direct Attach Copper (DAC) breakout cable designed for reliable 100 Gigabit Ethernet connectivity. This cable converts a single QSFP28 port into four SFP28 ports, enabling cost-effective and efficient network interconnects in data centers and high-performance computing environments. With a length of 1 meter and AWG26 gauge, it provides a low-latency, zero-power solution for short-range links.

Advantages

This passive DAC cable offers several benefits: it consumes no power (0W), reducing overall energy costs; it supports hot-swappable installation for minimal downtime; and its breakout design allows flexible connectivity from a 100G port to four 25G devices. The cable is fully compliant with IEEE 802.3bj and SFF standards, ensuring interoperability with Infinera and other MSA-compliant equipment.

Suitable for

• Data center top-of-rack (ToR) to server connections
• High-performance computing (HPC) clusters
• Network aggregation and core switching
• Enterprise network upgrades to 100G

Key specifications

• Cable Type: Direct Attach Copper (DAC) Breakout
• Connector A: QSFP28
• Connector B: 4x SFP28
• Aggregate Data Rate: 100 Gbps
• Per Lane Data Rate: 25 Gbps
• Ethernet Standard: 100GBASE-CR4 to 4x 25GBASE-CR
• Cable Length: 1 Meter (3.28 ft)
• Wire Gauge: AWG26
• Passive Design: No power consumption
• Impedance: 100 Ohm
• Operating Temperature: 0°C to 70°C
• Compliance: IEEE 802.3bj, SFF-8665, SFF-8402, RoHS

Recommendations

For optimal performance, ensure that both the QSFP28 and SFP28 ports on your switches or servers are MSA-compliant. This cable is ideal for short-distance interconnects up to 1 meter; for longer distances, consider active optical cables or transceivers.