Network Cable Mellanox MCP7H50-H001R30 QSFP-DD to 2xQSFP28 Passive 200G 2x100G Twinax Copper 3m Blue

The Mellanox MCP7H50-H001R30 QSFP-DD to 2xQSFP28 passive twinax copper cable provides a direct-attach solution for high-density, short-reach data center interconnects. With a QSFP-DD plug on one end and two QSFP28 plugs on the other, this 3 meter cable supports an aggregate 200G link that splits into two 100G channels, enabling flexible connectivity between switches, servers and adapters within racks or between adjacent racks. The cable's passive twinax construction offers low latency and consistent performance for high-throughput environments, while the blue jacket helps with visual cable management.

Advantages

This passive DAC cable delivers high bandwidth and low latency without the need for external transceivers, reducing power consumption and system complexity. The QSFP-DD to 2xQSFP28 break-out design supports direct 200G to dual-100G conversions for compatible ports, enabling simple aggregation or segmentation of links. Its 3 m length is suitable for rack and adjacent-rack deployments, and the robust twinax copper provides stable electrical characteristics for short-reach connections. The blue color eases identification in dense cable bundles.

Suitable for

• Connecting QSFP-DD ports on high-density switches to dual QSFP28 ports on servers or adapters
• Short-reach links inside a rack or between adjacent racks (up to 3 m)
• High-throughput, low-latency switching and aggregation in data centers

Key specifications

• Connector type: QSFP-DD (one end) to 2 × QSFP28 (other end)
• Cable type: Passive twinax copper (direct attach)
• Data rate: Aggregate 200 Gbps, splits to 2 × 100 Gbps
• Length: 3 meters
• Jacket color: Blue

How to use

Ensure both devices support passive QSFP-DD to QSFP28 break-out connections and that the ports are powered down before insertion if recommended by the equipment vendor. Align the QSFP-DD connector with the host port and insert until it seats firmly; then connect the two QSFP28 plugs to the corresponding ports. After physically securing the cable, enable or verify link negotiation and port configuration in the switch or server operating system to confirm 200G or 2×100G operation as required. Avoid sharp bends and maintain manufacturer-recommended bend radius for reliable long-term performance.

Usage recommendations

Use this passive DAC for short-distance, high-bandwidth connections inside racks or between adjacent racks where active optical transceivers are unnecessary. Verify compatibility with your switch and adapter firmware and follow vendor guidance for break-out port configuration to ensure expected link speeds and stability.