NVIDIA(Mellanox) MCP1600-E002E30 Compatible QSFP28 to QSFP28 Passive DAC Twinax Cable | 100G InfiniBand EDR, 4×25G NRZ (2m, Copper, 30AWG)
Product Overview
HYTOPTODEVICE 2m QSFP28 Passive DAC Twinax Cable serves as fully interchangeable replacement for NVIDIA(Mellanox) MCP1600-E002E30.
This passive twinax copper assembly delivers stable 100G EDR InfiniBand transmission based on 4×25G NRZ signaling.
Designed with 30AWG copper conductors, optimized for medium-length interconnections spanning up to 2 meters between separated server racks.
As a passive DAC design, there are no onboard electronic chips, so the cable consumes zero operational power.
It maintains ultra-low end-to-end latency and consistent signal integrity for simulation workloads and GPU accelerated computing.
Pre-programmed matching EEPROM enables trouble-free, zero-warning hot plugging on certified NVIDIA InfiniBand hardware.
We provide sample verification and large-volume wholesale supply of
100G EDR QSFP28 DAC cable.
Custom EEPROM tuning and private OEM labeling services are available for global system integrators
Key Technical Specifications
| NVIDIA(Mellanox) Compatible |
MCP1600-E002E30 |
Vendor Name |
HYTOPTODEVICE |
| Connector |
QSFP28 to QSFP28 |
Max Data Rate |
100Gbps |
| Cable Length |
2m (7ft) |
AWG |
AWG 30 |
| Jacket Material |
PVC(OFNR) |
Minimum Bend Radius |
35mm |
| Operation Temperature |
0~ 70 °C (32 to 158°F) |
Protocols |
InfiniBand EDR |
Usage Guidelines & Best Practices
This 2m passive QSFP28 DAC cable is purpose-built for ultra-short in-rack connections inside HPC and AI server racks.
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Distance Restriction: This variant is designed strictly for 2m links. Do not extend routing beyond the rated length to avoid signal degradation.
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Cable Routing Rules: Maintain minimum bend radius to prevent internal conductor damage and signal loss.
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Passive DAC Advantage: No power draw, ideal for high-density rack deployments without extra power load.
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Environment Suggestion: Avoid tight cable bundling with high-power cables to reduce electromagnetic interference.
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Application Reminder: For links longer than 3 meters, select active copper cables or QSFP28 optical AOC solutions.
Full Compatibility List & Supported Network Hardware
1. Validated NVIDIA Hardware Platforms
Plug-and-play compatible with mainstream EDR InfiniBand equipment:
- EDR InfiniBand Switches: SB7800, SB7890
- Host Channel Adapters: ConnectX-5 VPI
- GPU Compute Servers with QSFP28 HCA ports
2. Multi-Vendor Interoperability
Compliant with QSFP28 MSA standards. It supports cross-vendor interconnection with standard 100G EDR hardware.
3.Value-Added Compatibility Services & Self-Programming Support
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On-Site Recoding Solutions: Gain full control with our optional smart coding boards and software, enabling your team to rewrite EEPROM compatibility codes on demand.
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Free Lifetime Firmware Maintenance: Enjoy complimentary firmware update downloads whenever switch OS versions upgrade or new hardware platforms are released.
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Custom Code Adaptation: Need support for specialized or legacy network systems? Our engineers offer free custom firmware tailoring to guarantee 100% link-up.
Primary Application Scenarios
- Medium Cross-Rack Interconnection: 2-meter cabling links compute servers and top-of-rack EDR InfiniBand switches across separated rack enclosures. Ideal for procurement teams building medium to large HPC clusters.
- Leaf-Spine Fabric Trunk Links: Deploy trunk connections for leaf-spine topology between racks that cannot be connected with shorter 0.5m/1m/1.5m DAC cables.
- GPU Cluster Interconnect: Link DGX servers fitted with ConnectX-5 adapters for parallel simulation and AI training tasks.
- Low-Latency Parallel Storage Fabric: Connect storage nodes equipped with EDR InfiniBand HCAs for high-performance distributed storage systems.
- Enterprise HPC Lab Deployment: Cost-effective medium-range cabling for computing laboratories and performance benchmark environments.
Connectivity Solutions(Applications)
1.100G to 100G for Switch-Switch
2.100G to 100G for Switch-Adapter Card
FAQ
Q1: What transmission protocol does the MCP1600-E002E30 compatible 2m QSFP28 DAC cable support
A1: This purchased QSFP28 passive DAC cable supports 100G EDR InfiniBand with 4×25G NRZ signaling, engineered specifically for fixed 2-meter cross-rack interconnections.
Q2: Will purchased 2m QSFP28 DAC cable trigger unrecognized cable warning alerts on NVIDIA SB7800 EDR switches
A2: Our cables are preloaded with EEPROM matching MCP1600-E002E30 specifications. After installation, purchased 100G QSFP28 EDR DAC cable runs alarm-free and maintains full port functionality on validated NVIDIA hardware.
Q3: Does this passive QSFP28 twinax cable draw power during data transmission
A3: As a fully passive copper assembly, purchased 100G QSFP28 EDR DAC cable contains no semiconductor chips and consumes zero power, helping operators cut total power consumption inside high-density HPC racks.
Q4: What bending limits should be followed when deploying bulk 2m QSFP28 DAC cables
A4: The cable requires a minimum single bend radius of 35.5mm and 71mm for repeated bending. Sharp bending beyond these limits will degrade signal quality for purchased 100G QSFP28 EDR DAC cable.
Q5: Can this 2m passive DAC deliver stable links for wiring runs longer than 2 meters
A5: Not recommended. This model is electrically tuned exclusively for 2-meter fixed-distance transmission. Surpassing the rated length causes signal attenuation, unstable links and data packet errors for purchased 100G QSFP28 EDR DAC cable.
Q6: When building cross-rack HPC connections at around 2 meters, what factors help procurement teams choose passive DAC over optical AOC
A6: Passive twinax DAC delivers lower latency and better cost efficiency if all links stay under 3 meters. For inter-row links exceeding 3 meters, buyers need to select active copper DAC or optical AOC instead of purchased 100G QSFP28 EDR DAC cable.
Why Network Engineers Choose HYTOPTODEVICE
HYTOPTODEVICE has supplied over 200,000 passive Direct Attach Copper(DAC) cable to data centers and enterprise networks across 100+ countries since 2011. Every passive DAC cable undergoes comprehensive 100% performance, signal integrity, and compatibility testing before shipment。
- 100% MSA-compliant DAC with Cisco, Huawei,Dell,Juniper, and Arista compatibility
- ISO 9001:2015 certified manufacturing facility in Shenzhen
- Average lead time of 3–5 business days with DHL/FedEx express options
- Dedicated pre-sales engineering support for custom configurations
- Actual hardware,actual switches,actual results.we publish compatibility test video,eliminate compatibility anxiety. you can watch before you buy.
- We can provide inspection and shipping videos to make you feel as if you are right here with the product.
"We replaced 100 Cisco-branded DACS with HYTOPTODEVICE equivalents across our spine layer — zero compatibility issues, 40% cost reduction."— Network Architect, Tier-2 ISP, England
Quality Certification & Compliance
At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From passive DAC cable manufacturing to final inspection, our processes ensure global compliance and reliability.
We adhere to rigorous standards for our passive DAC cable and network solutions:
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ISO 9001: Certified quality management and production consistency.
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CE & FCC: Fully compliant for seamless Global Market Access.
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RoHS: Committed to environmental responsibility and hazardous material control.
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Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.
Certified Quality. Global Standards. Guaranteed Performance.
Rigorous Industrial Product Testing
100% 3rd Party Compatible
Partial Test Demonstration：
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