Identity & Definition
The NVIDIA Mellanox MCP7Y50-N001 is a 1-meter passive copper splitter cable in the enterprise InfiniBand DAC cable category. This cable converts a single 800 Gb/s NDR OSFP port into four independent 200 Gb/s NDR200 OSFP outputs. All five connectors are OSFP with Flat-Top design. NVIDIA P/N: 980-9I75E-00N001. This is an InfiniBand NDR/NDR200 cable — it does NOT support Ethernet. Condition: Refurbished.
Engineering Context
The 800 Gb/s OSFP upstream port contains eight 100G PAM4 lanes (8x 100 Gb/s = 800 Gb/s). The cable splits these into four groups of two lanes each, creating four independent 200 Gb/s NDR200 OSFP outputs (2x 100G PAM4 per output). As a fully passive copper splitter, it draws zero power, adds virtually no latency, and has no active electronics. The LSZH jacket meets modern data center safety standards. The OSFP-to-OSFP topology at 200G is a rare configuration — most 200G endpoints use QSFP112. This cable targets environments where the compute nodes use OSFP cages for thermal headroom or liquid-cooled blade uniformity.
Deployment & Use Cases
Maximizing NDR switch port utilization by fanning out one 800G port to four compute nodes at 200 Gb/s NDR200. Liquid-cooled GPU clusters using OSFP-based accelerator modules that require Flat-Top connectors. OSFP-based compute blades and midplane architectures where OSFP uniformity is required across all port speeds. High-density AI training fabrics where 200 Gb/s per-node bandwidth meets workload requirements while maximizing node count per switch port.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCP7Y50-N001
NVIDIA P/N: 980-9I75E-00N001
Type: Passive Copper Splitter (1-to-4 breakout)
Upstream: 1x OSFP 800 Gb/s NDR
Downstream: 4x OSFP 200 Gb/s NDR200
Lane Assignment: 2x 100G PAM4 lanes per 200G output
Length: 1 meter
Connector Design: Flat-Top OSFP (all ends)
Jacket: LSZH
Power Draw: 0W (fully passive)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
InfiniBand NDR/NDR200 only — does NOT support Ethernet, HDR (200 Gb/s HDR is electrically different from NDR200), or EDR. All five connectors are OSFP — NOT compatible with QSFP112, QSFP56, QSFP-DD, or QSFP28 ports. Flat-Top OSFP design — intended for liquid-cooled or thermally managed chassis; NOT recommended for air-cooled OSFP cages requiring RHS (finned-top) heat dissipation. Passive design limits reach to 1 meter. The cable is physically rigid. For the 1-to-2 breakout (800G to 2x 400G NDR), see MCP7Y00-N001 instead.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS (tes-itsolutions.com) signal-tests every NDR splitter cable on NVIDIA NDR/NDR200 hardware for full link validation across all breakout channels. Technical consultation available for NDR fabric design and OSFP cable planning. Global shipping with 1–3 business day handling.