What is the NVIDIA equivalent of the Lenovo 03GX904?

The NVIDIA cross-reference is MCP7Y00-N001 (980-9I432-00N001). The Lenovo 03GX904 is the OEM-branded version with identical specifications.

What is the difference between 03GX904 (1m) and 03GX905 (1.5m)?

Both are Lenovo NDR OSFP to 2xOSFP passive splitter DACs. The only difference is length: 03GX904 is 1m, 03GX905 is 1.5m. Electrical specifications are identical.

Does this cable consume power?

No. The 03GX904 is a passive copper cable with zero power consumption and deterministic ultra-low latency.

Lenovo Mellanox 03GX904 OSFP 800Gb/s to 2x400Gb/s NDR Passive Copper Splitter DAC, 1m: This is a 1-meter passive copper twin-port splitter cable that connects a single 800Gb/s OSFP NDR port to two independent 400Gb/s OSFP NDR endpoints. The Lenovo 03GX904 is the OEM-branded equivalent of the NVIDIA MCP7Y00-N001 (980-9I432-00N001). This is a refurbished unit.

Engineering Context

The 03GX904 enables 2:1 fan-out from 800G NDR switch ports without active electronics. As a passive copper assembly, it introduces zero additional latency, consumes no power, and requires no firmware. The cable splits the eight PAM4 lanes of a single 800G OSFP port into two groups of four lanes, each delivering 400Gb/s NDR to a separate OSFP endpoint. At 1 meter, this cable is designed for adjacent U-space connectivity within a single rack or between immediately neighboring racks in dense AI pod configurations.

Deployment and Use Cases

Splitting 800G NDR switch ports to connect two 400G compute nodes or leaf switches. NVIDIA SuperPOD and DGX-style GPU cluster wiring where 1m reach is sufficient. High-density AI training fabrics requiring maximum port utilization from Quantum-2 spine switches. In-rack and adjacent-rack connectivity for NDR InfiniBand storage and compute.

Technical Specifications

OEM: Lenovo
Part Number: 03GX904
NVIDIA Cross-Reference: MCP7Y00-N001 / 980-9I432-00N001
Cable Type: Passive Copper Splitter DAC (Twin Port)
Connectivity: 1x OSFP to 2x OSFP
Protocol: InfiniBand NDR
Bandwidth: 800Gb/s to 2x400Gb/s
Signaling: PAM4
Length: 1 meter
Power: 0W (passive)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS

Compatibility and Hard Constraints

OSFP Ports Only: Both switch-side and endpoint-side connectors are OSFP. Not compatible with QSFP-DD, QSFP56, or QSFP28 ports. NDR Only: Designed for InfiniBand NDR (400/800Gb/s) signaling. Not backward compatible with HDR or EDR ports. Switch Split Mode Required: The host switch port must support OSFP twin-port or split mode. Verify switch firmware supports 2x400G breakout on the target port. Electrically equivalent to NVIDIA MCP7Y00-N001.

Why Choose T.E.S IT-SOLUTIONS

T.E.S IT-SOLUTIONS validates every NDR splitter cable for lane mapping integrity and signal quality before shipment. We provide expert consultation on NDR fabric topology, global shipping with tracking, and comprehensive warranty.

Lenovo Mellanox® 03GX904 OSFP 800G to 2x400G NDR Passive Splitter DAC 1m

Name: Lenovo Mellanox® 03GX904 OSFP 800G to 2x400G NDR Passive Splitter DAC 1m
SKU: 03GX904_Refurbished

SKU: 03GX904_Refurbished

€320.00

Quantity