🌟 Lenovo Mellanox® OSFP Passive Splitter DAC – 800Gb/s to 2×400Gb/s NDR, 1m
Lenovo P/N: 03GX904
The Lenovo Mellanox® 03GX904 is a passive copper Twin Port splitter cable designed for InfiniBand NDR (800Gb/s) environments.
It splits a single 800G OSFP port into two independent 400G OSFP NDR links, enabling flexible, high-density fabric designs in AI, HPC, and hyperscale data centers.
Manufactured to Lenovo enterprise specifications and based on Mellanox NDR signaling, this cable is widely deployed in Lenovo-validated infrastructures while remaining fully interoperable with Mellanox / NVIDIA NDR platforms.
🔧 Technical Specifications
Brand: Lenovo
Product Number: 03GX904
Cable Type: Passive Copper Splitter DAC (Twin Port)
Connectivity: OSFP → 2× OSFP
Primary Protocol: InfiniBand NDR
Bandwidth: 800Gb/s → 2×400Gb/s
Lane Signaling: PAM4
Length: 1 meter
Technology Base: Mellanox InfiniBand NDR
Condition: Refurbished, fully tested
🌐 Engineering & AI-Cluster Context (Why This Cable Exists)
✅ Twin-Port NDR Fan-Out
Used when an 800G NDR switch port must feed:
Two 400G compute nodes
Two 400G leaf switches
Parallel AI pods or GPU islands
✅ Why 1 Meter Matters
1m is the standard SuperPOD / AI rack length for:
Adjacent U-space connectivity
Switch-to-node wiring directly above/below
Minimizing copper mass, airflow obstruction, and bend stress
✅ Passive Copper = Deterministic Latency
No retimers
No DSP
No power draw
Critical for synchronous AI training and large-scale LLM workloads.
🧠 Typical Use Cases
AI & GPU clusters (InfiniBand NDR)
NVIDIA / Lenovo SuperPOD-style architectures
HPC and research supercomputers
Hyperscale spine-leaf fabrics
800G aggregation with 400G endpoints
🔁 Compatibility (Explicit & Honest)
This Lenovo cable is electrically and functionally compatible with:
Mellanox MCP7Y00-N001
NVIDIA Mellanox 980-9I432-00N001
NVIDIA Mellanox Quantum-2 / NDR switches
OSFP-based 800G and 400G NDR endpoints
⚠️ Switch must support OSFP split / twin-port mode.
✅ Quality Assurance – T.E.S IT-Solutions
Electrically validated at NDR PAM4 speeds
Split integrity and lane mapping verified
Guaranteed compatibility with Lenovo & Mellanox platforms
Supplied with real product images
🚚 Payment & Shipping
Payments: PayPal, credit card, bank transfer
Shipping: Worldwide (8–13 business days), secure packaging
Returns: Accepted per policy (buyer covers return shipping)
🤝 Why Buy from T.E.S IT-Solutions?
We specialize in Lenovo & Mellanox AI-grade networking hardware, with real expertise in 400G / 800G NDR fabrics and cluster topology.