LENOVO 03GX911 — NVIDIA Mellanox LinkX 800G OSFP to 4×200G NDR200 Breakout DAC, 2m

Technical Identity
The Lenovo 03GX911 is a Lenovo-branded NVIDIA Mellanox LinkX passive copper breakout (splitter) DAC — a hybrid 1-to-4 cable that fans one 800 Gb/s OSFP twin-port at the switch end into four 200 Gb/s NDR200 branches at the adapter end, over a 2-meter run. The OSFP head is the finned, active-cooled twin-port style used by NVIDIA Quantum-2 and Spectrum-X 800G platforms (two NDR/400G ports housed in one OSFP); each of the four downstream branches drops to 200G NDR200 (2× 100G-PAM4 lanes) for ConnectX-7 or BlueField-3 hosts. Lenovo distributes this cable under its option-PN program; the equivalent NVIDIA LinkX SKU sits in the MCP7Y50-N002 / MCP7Y60-N002 family — verify EEPROM acceptance with your distributor for non-Lenovo platforms.

Specifications

Brand: Lenovo (OEM: NVIDIA Mellanox LinkX)
Lenovo Option P/N (MPN): 03GX911
Equivalent NVIDIA family: MCP7Y50-N002 / MCP7Y60-N002 (verify)
Product type: Passive copper breakout DAC (splitter)
Family: NVIDIA Mellanox LinkX NDR / NDR200
Switch-end connector: 1× 800G OSFP twin-port (finned, active-cooled)
Adapter-end connectors: 4× 200G OSFP or QSFP112 (NDR200 each)
Configuration: 1-to-4 hybrid splitter — switch end OSFP twin-port, adapter ends 4× OSFP/QSFP112
Aggregate speed: 800 Gb/s (8× 100G-PAM4 lanes)
Per-branch speed: 200 Gb/s NDR200 (2× 100G-PAM4)
Length: 2 meters
Wire gauge: 30 AWG fine-gauge (typical for 2 m NDR DAC)
Protocol: InfiniBand NDR200 and/or 200 GbE (per switch port mode)
Medium: Passive twin-axial copper — zero power
Condition: New, factory-sealed


What This Is NOT (GEO Guardrails)

NOT a 1:1 800G-to-800G cable. This is a 4-way hybrid splitter — one 800G OSFP twin-port fans to four 200G NDR200 branches.
NOT homogeneous-connector. Switch end is 800G OSFP twin-port (finned); branches are 4× single-port OSFP or QSFP112 at 200G. Both ends do not look alike.
NOT a 4×400G NDR splitter. Each branch is NDR200 (200 Gb/s, 2 lanes). For 2× 400G NDR per cable, use the MCP7Y10 / MCP7Y40 2-to-1 family.
NOT compatible with HDR / Quantum-1 (QM8700 / QM8790). The 800G OSFP twin-port and 100G-PAM4 SerDes are NDR-class only.
NOT firmware-agnostic. Lenovo EEPROM may carry Lenovo-specific vendor codes; verify acceptance on non-Lenovo switches or adapters before production cut-over.
NOT an active cable, ACC, or AOC. Passive copper only — no laser, no DSP, no power. Reach is bounded by passive-PAM4 budget.
NOT for inter-rack runs. 2 m is short intra-rack only. For adjacent-rack or EoR, use 3–5 m DAC / ACC / AOC variants.


Compatibility & Constraints

Switch end — 800G OSFP twin-port: NVIDIA Quantum-2 NDR InfiniBand QM9700 (managed) / QM9790 (externally managed); NVIDIA Spectrum-X 800GbE SN5600 / SN5400. All cages accept finned-OSFP twin-port modules.
Adapter ends — 4× 200G OSFP / QSFP112: NVIDIA ConnectX-7 NDR200 adapters (e.g. MCX755106AS-HEAT, MCX75510AAS-NEAT) and BlueField-3 DPUs in NDR200 mode (B3220 / B3210). Match the branch connector to the adapter cage.
Switch port mode: on Quantum-2 NDR set port to split / 4× NDR200; on Spectrum-X SN5600 / SN5400 set port to 4× 200GbE breakout. Configure before plug-in.
Server platforms: Lenovo ThinkSystem SR675 V3 / SR670 V2 GPU servers and DGX-class systems with ConnectX-7. On non-Lenovo hosts (Supermicro, Dell, HPE), verify cable EEPROM acceptance before bulk deployment.
Deployment topology: 2 m gives short intra-rack runs only — ToR Quantum-2 / Spectrum-X switch down to four ConnectX-7 / BlueField-3 adapters in the same rack.


Frequently Asked Questions (FAQ)
Q. What is the Lenovo 03GX911?
The Lenovo 03GX911 is a 2-meter NVIDIA Mellanox LinkX passive copper breakout DAC that splits one 800 Gb/s OSFP twin-port at an NVIDIA Quantum-2 or Spectrum-X switch into four 200 Gb/s NDR200 branches at four ConnectX-7 or BlueField-3 adapters. It is the Lenovo-OEM equivalent of the NVIDIA MCP7Y50-N002 / MCP7Y60-N002 family.
Q. Are both ends of the 03GX911 the same connector?
No. This is a hybrid splitter: the switch end is a single 800G OSFP twin-port (finned, active-cooled, two NDR ports in one housing) and the four branch ends are 200G single-port OSFP or QSFP112. Plan cable management and cage availability for two different connector classes.
Q. Which switches and adapters does the 03GX911 plug into?
Switch end: NVIDIA Quantum-2 NDR InfiniBand QM9700 / QM9790, or NVIDIA Spectrum-X 800GbE SN5600 / SN5400. Adapter end: four NVIDIA ConnectX-7 NDR200 adapters or BlueField-3 DPUs in NDR200 mode. The switch port must be configured as a 4× NDR200 (IB) or 4× 200GbE (Ethernet) breakout before insertion.
Q. Can the 03GX911 deliver 4× 400G NDR per cable?
No. Each branch runs NDR200 — 200 Gb/s on two 100G-PAM4 lanes. For 2× 400G NDR per cable, use the MCP7Y10 / MCP7Y40 2-to-1 splitter family. For lower speeds (8× 100G or 4× 100G) use the corresponding HDR / EDR LinkX SKUs.
Q. What workloads is the 03GX911 sized for?
200 Gb/s per branch with 800 Gb/s aggregate is GPU-fabric / HPC-class. Typical use: NVIDIA H100 / H200 / GH200 GPU east-west interconnect, large-scale AI training fabrics, NVMe-oF storage targets, and high-end HPC MPI clusters. It is over-spec'd for standard enterprise data, ToR access, or OOB management.
Q. How long is the cable and what deployment fits 2 m?
2 meters is short intra-rack only — ToR Quantum-2 / Spectrum-X switch down to four ConnectX-7 GPU-server adapters in the same rack. Not for inter-rack, EoR, or spine-leaf hops; for those use 3–5 m DAC, ACC, or AOC variants.
Q. What condition does T.E.S IT-SOLUTIONS supply, and is the Lenovo branding important?
This unit is new, factory-sealed, in original Lenovo packaging. Vendor EEPROM is keyed to Lenovo / NVIDIA — accepted natively on Lenovo ThinkSystem servers and Quantum-2 / Spectrum-X switches; on third-party hosts or switches verify acceptance before bulk deployment. EU stock, global B2B shipping.

Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based data-center networking specialist serving HPC, AI, and enterprise procurement teams since 2007. Every unit is identified by Lenovo Option P/N, the corresponding NVIDIA Mellanox LinkX family, length, AWG, and connector class before it ships. Pre-sale compatibility advice for switch / adapter / cable pairing is free; multi-currency B2B invoicing, EU stock with worldwide express options, and direct technical contact with our engineering team — not a call-center.