BlueLAN QSFP+ Direct Attach Cable, 40GBASE-CR4, Ethernet/InfiniBand QDR, 28 AWG, 5 m, Compatible with H3C LSWM1QSTK5 LSWM1QSTK5-BL

High-density data centers and HPC clusters need short-reach 40G links that don't break the budget or add latency. This BlueLAN QSFP+ direct attach cable replaces a pair of optical transceivers and fiber with one twinax copper assembly, cutting cost and power while keeping a clean 40GBASE-CR4 signal over 5 meters.

Who is it for

Network engineers deploying H3C switches or any QSFP+ port that accepts a compatible DAC. It suits top-of-rack to server connections, storage interconnects, and InfiniBand QDR fabrics where a passive copper cable is the right fit.

Main features

• 40 Gbps aggregate bandwidth over four lanes, per the 40GBASE-CR4 standard.
• QSFP+ to QSFP+ connectors, hot-swappable and compatible with H3C LSWM1QSTK5.
• 28 AWG twinax copper conductors with PVC jacket, passive design for low power and zero electronics.
• Supports both Ethernet and InfiniBand QDR protocols.
• 5 meter length for flexible rack-level cabling.

Specifications

• Cable type: Direct attach twinax copper
• Data rate: 40 Gbps
• Ethernet standard: 40GBASE-CR4
• Connectors: QSFP+ to QSFP+
• Length: 5 m
• Wire gauge: 28 AWG
• Protocol support: Ethernet, InfiniBand QDR
• Form factor: QSFP+
• Passive: Yes
• Hot-swappable: Yes
• Operating temperature: 0°C to 70°C
• Application: Data center interconnect, HPC

Tips

Check your switch vendor's DAC compatibility list before ordering. Passive cables work best within a single rack or adjacent racks; for longer runs or higher port density, consider active optical cables.