Alcatel-Lucent QSFP+ to QSFP+ Direct Attach Copper Cable, 3 m, 40GbE, Passive, Black

Direct Attach Copper (DAC) cable engineered for 40 Gigabit Ethernet, linking QSFP+ ports across short distances with zero optical transceivers. This 3-meter passive copper assembly delivers 40GBASE-CR4 performance at minimal power draw, making it a practical choice for dense data center racks and high-performance computing clusters.

Advantages

Passive DAC design consumes virtually no power, reducing both energy costs and heat output inside the rack. The 26 AWG copper conductors and PVC jacket provide a robust yet flexible link that withstands frequent re-cabling. Hot-pluggable QSFP+ connectors allow live insertion and removal without interrupting adjacent ports, while full IEEE 802.3ba compliance ensures interoperability with Alcatel-Lucent and Nokia switches and routers.

Suitable for

• Top-of-rack to end-of-row server connections in enterprise data centers
• High-performance computing (HPC) clusters requiring low latency and high bandwidth
• Storage area networks and converged infrastructure using 40GbE uplinks
• Short-reach interconnects between QSFP+ switches, routers, and network appliances

Key specifications

• Cable type: Direct Attach Copper (DAC), passive
• Connectors: QSFP+ male to QSFP+ male
• Data rate: 40 Gigabit Ethernet (40GBASE-CR4)
• Length: 3 meters (9.84 feet)
• Conductor gauge: 26 AWG copper
• Jacket material: PVC, black
• Compliance: IEEE 802.3ba, hot-pluggable
• Part number: 3HE09000AA

Recommendations

For short 40GbE links inside a single rack or adjacent cabinets, this passive DAC cable offers the lowest latency and power consumption compared to optical alternatives. It is ideal for high-density environments where every watt and millisecond counts.