Mellanox MCP7H50-V003R26 Compatible TAA Compliant 200GBase-CU QSFP56 to 2xQSFP56 Infiniband HDR Direct Attach Cable (Passive Twinax, 3m, LSZH)

The Mellanox MCP7H50-V003R26 Compatible 200G HDR Direct Attach Cable is a premium, high-performance interconnect solution engineered for demanding data centers, high-performance computing clusters, and enterprise storage environments. This direct attach copper breakout cable delivers ultra-low latency, deterministic bandwidth, and reliable signal integrity across 200G HDR workloads. Built to exacting industry standards, it provides a cost-effective alternative to fiber by offering immediate plug-and-play connectivity without the need for active components or external power.

Designed for environments that demand scalable, dense topologies, this 3-meter, LSZH-jacketed DAC supports a 1x QSFP56 to 2x QSFP56 breakout configuration, enabling flexible layouts where a single high-speed port can be split to serve multiple devices. The cable is optimized for Infiniband HDR networks, delivering robust performance across short-to-medium reach deployments in racks, rows, and data-center corridors. Its TAA compliance makes it suitable for procurement in government and educational institutions, ensuring compatibility with enterprise purchasing standards.

• 1x QSFP56 to 2x QSFP56 breakout: Provides high-density, aggregated 200 Gbps HDR connectivity by splitting a single port into two independent 100G or 200G links, ideal for connecting a single host or switch to multiple destinations in a single run.
• Passive Twinax design with no external power: Eliminates power consumption and heat generation, offering ultra-low latency and predictable performance without active components or cooling requirements.
• 3-meter length with LSZH jacket: Flexible routing in dense data-center layouts, while LSZH (Low Smoke Zero Halogen) minimizes smoke and toxic fumes in case of fire, enhancing safety and reducing containment risk.
• TAA compliant and enterprise-ready: Meets trade and procurement requirements for government and educational buyers, ensuring compatibility with a wide range of approved vendors and procurement policies.
• High signal integrity for Infiniband HDR workloads: Engineered to support HDR data paths, delivering reliable, low-latency interconnects between compatible NICs, switches, and storage devices for demanding workloads.

Technical Details of Mellanox MCP7H50-V003R26 Compatible Direct Attach Cable

• Interface: QSFP56 to 2xQSFP56 breakout for Infiniband HDR
• Data rate: 200 Gbps per link (aggregate HDR bandwidth across the breakout)
• Cable type: Passive twinax copper Direct Attach Cable
• Length: 3 meters
• Jacket material: LSZH (Low Smoke Zero Halogen)
• Compliance: TAA compliant
• Application: Optimized for 200G HDR InfiniBand deployments between NICs, switches, and storage accelerators
• Connectors: QSFP56 ends with breakout configuration to 2 QSFP56 ports

how to install Mellanox MCP7H50-V003R26 Compatible 200G HDR DAC Cable

To ensure a smooth, risk-free installation and maximize performance, follow these steps:

• Verify compatibility: Confirm that your devices support 200G HDR InfiniBand and that the ports are QSFP56 capable. Review device manuals for breakout wiring if you are routing to two separate ports.
• Power management: In most setups, this DAC is plug-and-play and does not require external power. If your hardware policy requires, power down the devices before installation.
• Plan the topology: Decide how you want to utilize the breakout. One QSFP56 port will connect to the host or switch, while the two QSFP56 ends will connect to the corresponding ports on the peer device(s).
• Connect the cable: Align the QSFP56 connectors with the ports, push firmly until you hear a click, and engage any latches or retention mechanisms on the devices. Avoid bending or kinking the cable to preserve signal integrity.
• Validate operation: Power on the equipment, check link lights, and verify the HDR bandwidth is recognized by the NICs and switches. Monitor for errors and perform basic throughput tests to confirm stable performance.

Frequently asked questions

• What is the MCP7H50-V003R26 compatible DAC? It is a 200Gbps QSFP56 to 2xQSFP56 direct attach cable (passive, twinax) designed for InfiniBand HDR networks, with a 3-meter length and LSZH jacket, intended for flexible, high-density deployments.
• What does TAA compliance mean for this DAC? TAA compliance indicates the product is manufactured to meet requirements for procurement by U.S. and Canadian government and certain educational institutions, aligning with federal and state purchasing standards.
• Is this cable passive or active? This is a passive twinax Direct Attach Cable, meaning it has no active circuitry or external power needs and provides low-latency, high-speed connectivity.
• Can I use this DAC with Mellanox ConnectX adapters and HDR-enabled switches? Yes. The cable is designed to support HDR Infiniband workloads and is compatible with 200GBase-CU setups using QSFP56 interfaces on suitable devices.
• What are the safety and routing benefits of the LSZH jacket? LSZH jackets offer improved fire safety by emitting limited smoke and toxic fumes, which is particularly important in dense data-center environments where cabling is routed via ceilings and cable trays.