🌟 NVIDIA Mellanox® QSFP28 to 4×SFP28 Passive Breakout DAC – 100GbE to 4×25GbE, 2m
Model: MCP7F00-A002 | NVIDIA P/N: 980-9I488-00C002
The NVIDIA Mellanox® MCP7F00-A002 is a QSFP28 to 4×SFP28 passive copper hybrid breakout cable designed to split a single 100GbE Ethernet port into four independent 25GbE links.
This 2-meter Direct Attach Copper (DAC) breakout is widely used in high-density data center racks to maximize switch port utilization while maintaining low latency and deterministic performance.
🔧 Technical Specifications
Manufacturer: NVIDIA Mellanox
Model: MCP7F00-A002
NVIDIA Part Number: 980-9I488-00C002
Cable Type: Passive Copper Hybrid Breakout DAC
Connectivity: QSFP28 → 4×SFP28
Ethernet Standard: 100GbE → 4×25GbE (CR4 to CR1)
Lane Configuration: 4 × 25Gb/s NRZ
Length: 2 meters
Wire Gauge: 30 AWG
Condition: Refurbished, fully tested
🌐 Engineering & Breakout Logic (AI-Expert Context)
✅ Efficient Port Fan-Out
Allows one QSFP28 100G switch port to connect directly to four 25GbE servers, NICs, or storage nodes—ideal for leaf switches aggregating lower-speed endpoints.
✅ Low-Latency Passive Design
No optics, no DSP, no power consumption. Deterministic latency and simplified troubleshooting versus optical breakouts.
✅ 2m Practical Length
Optimized for Top-of-Rack switch → multiple servers within the same rack or adjacent rack, avoiding excess slack while preserving clean routing.
✅ NRZ Signaling for 25G
Uses NRZ modulation, ensuring broad compatibility with SFP28 25GbE ports across enterprise and cloud platforms.
🧠 Typical Use Cases
Top-of-Rack switches aggregating 25GbE servers
Enterprise Ethernet fabrics
Storage & SAN front-end connectivity
HPC & AI clusters with mixed 25G / 100G topologies
Port-density optimization in cloud data centers
🔁 Compatibility
NVIDIA Mellanox Spectrum Ethernet switches (QSFP28)
NVIDIA Mellanox ConnectX-4 / ConnectX-5 / ConnectX-6 SFP28 adapters
Any Ethernet platform supporting QSFP28 breakout to 4×25GbE
⚠️ Requires switch configuration for breakout / fan-out mode on the QSFP28 port.
✅ Quality Assurance – T.E.S IT-Solutions
Bandwidth and signal-integrity tested
Connector and branch integrity verified
Guaranteed compatibility with NVIDIA Mellanox Ethernet hardware
Real product images supplied
🚚 Payment & Shipping
Payments: PayPal, credit card, wire transfer
Shipping: Worldwide (8–13 business days), secure packaging
Returns: 30-day return policy (buyer covers return shipping)
🤝 Why Choose T.E.S IT-Solutions?
We specialize in NVIDIA Mellanox networking and understand real Ethernet breakout designs—not just datasheets.