Product Type | Direct Attach Cable (DAC) |
Cable Type | Passive Copper |
Length | 2 m |
Data Transfer Rate | 200 Gbps |
Supported Protocol | InfiniBand HDR |
Connector Type | QSFP56 |
Number of Connectors | 2 |
Application | High-speed interconnect for servers, storage, and switches |
Power Consumption | Low, passive design |
Latency | Ultra-Low Latency |
Use Case | HPC, AI, enterprise data centers |
Lenovo 4Z57A14185 Mellanox HDR 2M QSFP56 DAC Cable
Key Benefits

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- Optimized for high-performance, low-latency networking applications such as HPC and data centers
- Cost-effective alternative to active optical cables for short-distance connectivity
- Plug-and-play design allows quick, efficient deployment with minimal configuration
Product Overview
The Lenovo 4Z57A14185 cable is a high-speed 2-meter Direct Attach Cable (DAC) that utilizes Mellanox HDR InfiniBand technology and QSFP56 connectors to enable fast and reliable data transmission. This type of cable is engineered for short-range data communication between high-performance servers, switches, and storage systems, typically within data center rack configurations. The QSFP56 interface provides enhanced bandwidth performance suitable for high-throughput applications.
Built for environments demanding low latency and high bandwidth, this cable is a cost-effective solution for connecting hardware within close proximity without the need for active optical components. The passive DAC design helps reduce power consumption while maintaining performance consistency. Though the country of origin and TAA compliance status are unspecified, the Lenovo branding assures integration compatibility with Lenovo enterprise systems and third-party Mellanox-compliant equipment.
This cable is particularly beneficial in HPC (High-Performance Computing), AI workloads, and other bandwidth-heavy operational scenarios. Its compact size and simple plug-and-play functionality streamline deployment, contributing to time savings and network efficiency.
Specifications
Product Overview
Physical & Environmental
Cable Jacket Material | PVC |
Minimum Operating Temperature | 0°C |
Maximum Operating Temperature | 70°C |
Storage Temperature Range | -40°C to 85°C |
Relative Humidity (Operating) | 10% – 85% Non-condensing |
Relative Humidity (Storage) | 10% – 90% Non-condensing |
Bend Radius | 22 mm |
Durability | 30 mating cycles (typical) |
Cable Diameter | 4.2 mm |
Weight | 0.15 kg (approximate) |
Cloud Management & Licensing
Plug and Play | Yes |
Interfaces
Interface Standard | QSFP56 |
Interface Speed | 200 Gbps (4 x 50G PAM4 lanes) |
Connector 1 | QSFP56 |
Connector 2 | QSFP56 |
Cable Assembly Type | Twinax Copper |
Transmission Type | Passive |
Compliance Interface Standard | SFF-8665, SFF-8024 |
Compliance & Origin
Country of Origin | |
TAA Compliant | |
RoHS Compliance | Yes |
Reach Compliance | Yes |
Certifications | CE, FCC, UL |
Advanced Security Features
Tamper-resistant Design | No active components for alteration |