Identity & Definition
The NVIDIA Mellanox MCP1650-H02A is a 200Gb/s InfiniBand HDR / 200GbE enterprise data center passive copper cable in refurbished condition. This direct attach cable uses QSFP56 connectors on both ends to deliver 200Gb/s aggregate bandwidth over a 2.5-meter reach. The MCP1650-H02A is a point-to-point passive DAC cable — it is NOT a splitter or breakout cable, NOT an active optical cable (AOC), and NOT a fiber transceiver module.
Engineering Context
The MCP1650-H02A operates at 200Gb/s using four lanes of 50Gb/s PAM4 signaling over its QSFP56 interface. The cable is constructed with 26AWG copper conductors and an LSZH (Low-Smoke Zero-Halogen) outer jacket for fire safety compliance in enclosed data center environments. The black pulltab design facilitates easy insertion and removal in high-density switch panels. As a passive copper assembly, it introduces minimal signal latency and requires no external power.
Deployment & Use Cases
The MCP1650-H02A is typically deployed for 200Gb/s InfiniBand HDR switch-to-switch and switch-to-HCA connections in HPC clusters and AI training environments. The 2.5-meter reach provides flexibility for both intra-rack and short inter-rack connections. Common use cases include GPU-to-GPU interconnects via InfiniBand fabric in AI/ML training clusters, storage fabric links for parallel file systems such as Lustre and GPFS, and spine-to-leaf connections in 200GbE Ethernet fabrics using NVIDIA Spectrum-2 or Spectrum-3 switches with ConnectX-6 adapters.
Technical Specifications

Part Number (MPN): MCP1650-H02A
Cable Type: Passive Copper Cable (PCC / DAC)
Data Rate: 200Gb/s (InfiniBand HDR / 200GbE)
Connector: QSFP56 to QSFP56
Cable Length: 2.5 meters
Wire Gauge: 26AWG
Jacket Material: LSZH (Low-Smoke Zero-Halogen)
Pulltab: Black
Signaling: 4x 50Gb/s PAM4
Condition: Refurbished

Compatibility & Hard Constraints
The MCP1650-H02A requires 200Gb/s-capable QSFP56 ports on both endpoints. It is compatible with NVIDIA Mellanox HDR InfiniBand switches (e.g., QM8790 series) and ConnectX-6 HCAs. It is NOT compatible with QSFP-DD ports (different connector form factor with dual-row pinout) and is NOT designed for QSFP28 100GbE-only ports. For shorter reaches, the MCP1650-H001 (1m) and MCP1650-H01A (1.5m) variants are available.
Why Choose T.E.S IT-SOLUTIONS
Every MCP1650-H02A cable sold by T.E.S IT-SOLUTIONS is lab-tested for link integrity and bandwidth compliance before shipment. Our team provides technical consultation on NVIDIA Mellanox HDR cable compatibility, quantity availability, and deployment planning. Orders ship within 1–3 business days with worldwide delivery and protective packaging.