BlueOptics QNAP CAB-DAC1M-Q28B4 BlueLAN Passive 100GBASE-CR4 QSFP28 to 4x25GBASE-CR SFP28 Direct Attach Breakout Cable, 1m, Black

The BlueOptics QNAP CAB-DAC1M-Q28B4 BlueLAN passive direct attach breakout cable (DAC) is a high-performance, cost-effective solution for connecting a 100GbE QSFP28 port to four 25GbE SFP28 ports. Designed for data centers and enterprise networks, this 1-meter passive copper cable delivers reliable, low-latency connectivity without the need for external power.

Advantages

This breakout cable simplifies cabling by consolidating four 25GbE links into one 100GbE connection, reducing port density requirements and cable clutter. The passive design ensures zero power consumption and minimal heat generation, while the robust PVC jacket provides durability for high-density installations. Multi-vendor compatibility ensures seamless integration with QNAP, Cisco, Juniper, Arista, Mellanox, and other leading switches and servers.

Suitable for

• Data center top-of-rack (ToR) to server connections
• High-performance computing (HPC) clusters
• Enterprise network aggregation
• Storage area networks (SAN) requiring 100GbE uplinks

Key specifications

• Cable Type: Direct Attach Breakout Cable (DAC)
• Connector A: 1x QSFP28 Male
• Connector B: 4x SFP28 Male
• Data Rate: 100 Gbps aggregate (4x 25 Gbps per lane)
• Standard: IEEE 802.3bj (100GBASE-CR4), IEEE 802.3by (25GBASE-CR)
• Cable Technology: Passive Copper
• Length: 1 meter (3.3 feet)
• AWG: 30 AWG
• Impedance: 100 Ohm
• Jacket Material: PVC
• Hot Swappable: Yes
• Power Consumption: 0W (Passive)
• Operating Temperature: 0°C to 70°C
• Certifications: RoHS, CE, FCC
• Color: Black

Recommendations

For optimal performance, ensure your switch and server ports support the respective QSFP28 and SFP28 standards. This cable is ideal for short-reach breakout applications within racks or adjacent racks. Always verify compatibility with your specific hardware before installation.