BLUELAN 400G QSFP112 Direct Attach Copper Cable, 1m, Compatible with Supermicro CBL-NTWK-0912-QSFP-1 CBL-NTWK-0912-QSFP-1-BL

High-density data centers face a constant challenge: moving massive amounts of data between switches, servers, and storage without adding latency, power draw, or complexity. Optical links are expensive and fragile, while standard copper cables can't keep up with 400G speeds. This BLUELAN Direct Attach Copper (DAC) cable solves that problem by delivering a full 400 Gbps over a short 1-meter link using passive copper construction. It's engineered as a drop-in replacement for the Supermicro CBL-NTWK-0912-QSFP-1, so you get identical performance and compatibility at a fraction of the cost of OEM optics.

Who is it for

This cable is built for network engineers, data center operators, and IT procurement teams who need to interconnect QSFP112 ports in top-of-rack switches, high-performance computing clusters, or storage arrays. If you're deploying 400GBASE-CR4 Ethernet or Infiniband HDR/NDR fabrics and want a reliable, low-power, low-latency link, this is your go-to component. It's also ideal for anyone looking to replace or expand their existing Supermicro CBL-NTWK-0912-QSFP-1 inventory without paying brand premiums.

Main features

• 400 Gbps aggregate bandwidth with 4x 100G PAM4 lanes, compliant with 400GBASE-CR4 Ethernet and Infiniband standards.
• QSFP112 connector on both ends, fully compatible with Supermicro CBL-NTWK-0912-QSFP-1 and other MSA-compliant QSFP112 ports.
• Passive copper design: no signal conditioning, no power consumption (<0.5W), and near-zero added latency for the shortest possible link.
• 1-meter length with AWG 30 copper conductors and 100 Ohm impedance, optimized for intra-rack and adjacent-rack connections.
• Hot-pluggable and hot-swappable, allowing for quick installation and maintenance without downtime.
• Durable PVC jacket with robust pull-tab for easy insertion and removal in high-density port configurations.
• Compliant with RoHS, CE, and FCC standards, ensuring environmental and electromagnetic safety.

Specifications

• Cable type: Direct Attach Copper (DAC), passive
• Data rate: 400 Gbps (4x 100G PAM4)
• Protocol support: 400GBASE-CR4 Ethernet, Infiniband HDR/NDR
• Connector A: QSFP112
• Connector B: QSFP112
• Length: 1 meter
• Wire gauge: AWG 30
• Impedance: 100 Ohm
• Jacket material: PVC
• Operating temperature: 0°C to 70°C
• Power consumption: <0.5W (passive)
• Compliance: RoHS, CE, FCC
• Compatibility: Supermicro CBL-NTWK-0912-QSFP-1 and MSA-compliant QSFP112 ports

Tips

For best signal integrity, keep the bend radius above 35mm and avoid stretching or kinking the cable. Use this DAC for links up to 1 meter within the same rack or between adjacent racks; for longer distances, consider active optical cables (AOCs). Always verify that your equipment's QSFP112 ports support passive copper cables—most switches and NICs do, but some long-reach optics may require active cables. Store unused cables in a cool, dry place and avoid exposure to direct sunlight to prolong jacket life.