NVIDIA Mellanox InfiniBand NDR 800Gb/s to 4x200Gb/s OSFP Passive Copper Fanout DAC 3m - MCP7Y50-N003
This passive copper splitter cable is the NVIDIA Mellanox MCP7Y50-N003, a 1-to-4 OSFP fanout DAC that converts one 800 Gb/s InfiniBand NDR port into four independent 200 Gb/s NDR200 links over a 3-meter reach. This is a refurbished unit, professionally tested and validated by T.E.S IT-SOLUTIONS. It is NOT compatible with InfiniBand HDR 200 Gb/s (different lane signaling: HDR uses 4x50G, NDR200 uses 2x100G PAM4). It is NOT an Ethernet cable.
Engineering Context
The MCP7Y50-N003 splits an 800 Gb/s OSFP NDR signal (8x100G PAM4 lanes) into four OSFP NDR200 outputs (2x100G PAM4 lanes each). As a passive copper DAC, it adds zero latency and consumes zero power. The cable uses flat-top OSFP connectors on all five ends, with an LSZH (Low Smoke Zero Halogen) jacket. At 3 meters, this cable operates near the physical limit of passive copper at NDR data rates, requiring careful bend-radius management and straight routing paths.
Deployment and Use Cases
The MCP7Y50-N003 is deployed in OSFP-native InfiniBand NDR fabrics where a single Quantum-2 NDR switch port must fan out to four separate NDR200 compute or accelerator nodes. This is the standard topology for AI training clusters using NVIDIA DGX or HGX platforms with OSFP-based networking. The 3-meter reach covers rack-to-rack or pod-to-pod layouts in liquid-cooled or accelerator-dense environments. Flat-top OSFP connectors are designed for systems without RHS heat sinks.
Technical Specifications
Model: MCP7Y50-N003
NVIDIA P/N: 980-9I46T-00N003
Cable Type: Passive Copper Fanout DAC (Twinax)
Topology: 1x OSFP (800G NDR) to 4x OSFP (200G NDR200)
Protocol: InfiniBand NDR / NDR200
Signaling: PAM4 (8x100G upstream, 2x100G per downstream leg)
Length: 3 meters
Jacket: LSZH
Connector Style: Flat-Top OSFP (all ends)
Power/Latency: Zero (passive)
Condition: Refurbished
Compatibility and Hard Constraints
The MCP7Y50-N003 requires OSFP ports on all five ends. It is NOT compatible with InfiniBand HDR 200 Gb/s (QSFP56, 4x50G signaling). It is NOT compatible with QSFP112-based servers. It does NOT support Ethernet. Flat-top OSFP connectors are NOT for air-cooled cages requiring RHS heat sinks. The MCP7Y50-N02A is the 2.5-meter variant. Compatible with NVIDIA Quantum-2 NDR OSFP switches.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS provides this MCP7Y50-N003 as a professionally refurbished unit with NDR/NDR200 PAM4 lane integrity testing. Technical consultation is available. Global shipping with 1-3 business day handling time.