NVIDIA MCP4Y10-N002 OSFP to OSFP Passive DAC Cable 2x400G (800Gb/s) 2-Meter

This high-performance network card interface cable, also known under the product alias mq9700, delivers industry-leading 2x400Gb/s (800Gb/s aggregate) connectivity for next-generation data centers. Designed for ultra-low latency and power efficiency, it provides a reliable, cost-effective backbone for linking high-speed switches and computing platforms like the NVIDIA DGX H100. This passive copper solution is a critical nic card accessory for maximizing bandwidth density.

The NVIDIA® MCP4Y10-N002 is a twin-port OSFP to OSFP Direct Attached Copper (DAC) cable. It establishes a high-speed, low-latency link between two 400Gb/s ports, making it an essential component for building scalable, high-performance clusters. Its primary function is to interconnect NVIDIA Quantum-2 InfiniBand or Spectrum-4 Ethernet switches, or to connect such a switch to an NVIDIA DGX H100 system. The passive design eliminates active components, resulting in superior reliability, lower cost, and simpler deployment compared to optical solutions, solidifying its role as a premier network card interconnect.

• Data Rate: 2 x 400 Gigabits per second (800Gb/s aggregate).
• Modulation: Based on 8 channels of 100G PAM4 modulation.
• Length: Available in 0.5m, 1m, 1.5m, and 2m (MCP4Y10-N002 is the 2-meter variant).
• Connector: OSFP (Octal Small Formfactor Pluggable), hot-pluggable.
• Compliance: Compliant with SFF-8665 (connector) and SFF-8636 (I²C management).
• Operating Temperature: 0°C to 70°C case temperature.
• Power: Single 3.3V supply; consumes less than 0.1 Watt.
• Environmental: RoHS compliant, LSZH (Low Smoke Zero Halogen) jacket, Halogen-Free PCB.

This cable leverages industry-standard technologies to ensure interoperability and performance. It is fully compliant with the OSFP MSA (Multi-Source Agreement) specification. The electrical interface uses eight differential copper pairs, each carrying a 100 Gb/s PAM4 signal. The integrated EEPROM, accessible via a standard I²C (SFF-8636) management interface, stores vital product information, including vendor details, cable length, and supported application codes for both InfiniBand and Ethernet, allowing for automatic protocol configuration. This makes it a versatile nic card solution.

The cable functions as a passive electrical bridge. High-speed differential electrical signals from the transmitter (Tx) pins of the host network card or switch are carried through precisely engineered copper pairs within the cable. The cable's impedance is tightly controlled at 100Ω (±10%) to minimize signal reflection. At the far end, these signals are delivered directly to the receiver (Rx) pins of the connected device. No signal retiming, conversion, or active amplification occurs, which is the source of its ultra-low latency and power advantage. The host system reads the cable's EEPROM to identify it as a passive copper DAC and configure the appropriate link settings.

• High-Performance Computing (HPC) & AI Clusters: Primary use is for switch-to-switch spine-leaf connections within NVIDIA Quantum-2 InfiniBand or Spectrum-4 Ethernet fabrics.
• AI Training Infrastructure: Connecting NVIDIA DGX H100 systems to top-of-rack InfiniBand/Ethernet switches.
• High-Density Data Centers: Enables cost-effective, high-bandwidth connectivity between adjacent racks or within the same rack.
• Financial Trading & Real-Time Analytics: Where the lowest possible latency is critical, this passive DAC is the optimal mq9700 type solution.

Ordering Part Numbers (Selection):

• Cost-Effective Performance: Offers the lowest cost-per-gigabit solution for 400G/800G connectivity compared to active optical cables (AOCs) or transceiver-based links.
• Unmatched Latency: Passive electrical transmission provides the lowest possible latency, crucial for HPC and AI workloads.
• Power Efficiency: Near-zero power draw reduces operational expenses and thermal load in dense racks.
• Dual-Protocol Flexibility: One mq9700 cable serves both InfiniBand and Ethernet environments, simplifying inventory and provisioning.
• Superior Reliability: No moving parts or active components minimizes failure points, leading to higher MTBF.
• NVIDIA Optimized: Rigorously tested and tuned for seamless integration with NVIDIA Quantum-2, Spectrum-4, and DGX platforms.

We provide comprehensive support for all our network card and interconnect products:

• Warranty: Products come with standard manufacturer warranty.
• Lead Time: Most items, including the MCP4Y10-N002, are available from stock for immediate shipment.
• Technical Support: 24/7 pre- and post-sales consultation and technical assistance from our engineering team.
• Global Logistics: Reliable global shipping with full tracking to ensure accurate and timely delivery.
• Integration Services: Assistance with large-scale deployment planning and compatibility verification.

Q1: What is the difference between the finned top and flat top connectors?
A: Finned top connectors are standard for air-cooled switches. Flat top connectors (designated -FLT) are designed for liquid-cooled switch systems and specific server installations like the DGX H100 where space above the connector is limited.

Q2: Is this cable compatible with my existing 100G or 200G switch?
A: No. The MCP4Y10 is designed for OSFP ports running 400G per port (800G aggregate) protocols. It requires switches and nic cards that support OSFP form factor and 400GbE or InfiniBand NDR speeds.

Q3: How do I manage or monitor this cable?
A: The cable has an EEPROM managed via a standard I²C interface (SFF-8636). The host system (switch or server) can read information such as vendor, type, length, and supported protocols, but there is no active performance monitoring for a passive DAC.

Q4: What is the minimum bend radius to avoid damage?
A: For the 2m cable (MCP4Y10-N002), the minimum repeated bend radius near the connector is 10x diameter (89mm). A single, one-time bend away from the connector can be as tight as 5x diameter (44.5mm).

Q5: Does it support longer distances than 2 meters?
A: For reliable 400G per lane operation over copper, distances are typically limited to 2-3 meters. For longer reaches, Active Optical Cables (AOCs) or optical transceivers with fiber are recommended.

• Compatibility: Verify that your host equipment has OSFP cages and firmware that support passive DAC cables and the target data rate.
• ESD Handling: Always observe electrostatic discharge precautions. Use grounded wrist straps when handling. The connectors are shipped with protective caps; keep them on until installation.
• Cable Management: Adhere to the minimum bend radius specifications during installation and within cable management arms/racks to prevent permanent signal degradation or physical damage.
• Environmental: Designed for controlled data center environments (0-70°C, 5-85% humidity). Do not use in outdoor or harsh industrial settings.
• EMC/Regulatory: This is a Class A device. It may cause radio interference in residential environments; use only in commercial settings.

With over a decade of industry experience, we have established ourselves as a leading provider of enterprise network hardware solutions. Our large-scale manufacturing facilities and robust technical engineering team enable us to deliver exceptional value and reliability.

We are authorized partners for premier brands including NVIDIA Mellanox, Ruckus, Aruba, and Extreme Networks. Our extensive inventory, valued at over $10 million, features a comprehensive range of original, brand-new products suchs as high-performance network switches, network interface cards (NICs), wireless access points, controllers.