Product Type | Direct Attach Cable (DAC) |
Connector Type | SFP28 to SFP28 |
Form Factor | Passive Copper Cable |
Cable Length | 1 meter |
Wire Type | Twinax Copper |
Data Transfer Rate | 25 Gbps |
Product Series | Lenovo Networking Accessories |
Latency | Low latency design |
Power Requirement | No external power required (passive) |
Weight | Approximately 0.15 kg |
Lenovo 1m Passive 25G SFP28 DAC Cable (7Z57A03557)
Key Benefits

AI-Powered Summaries from Online Customer Reviews
Eye-Insights™ are generated by proprietary AI that analyzes real online customer reviews to highlight top pros and key product features. While we aim for accuracy, insights are provided “as-is” and individual results may vary.
- Supports high-speed 25Gbps connectivity, ideal for data-intensive enterprise networks
- TAA compliance ensures eligibility for government and regulated industry procurement
- Passive DAC design reduces latency and energy consumption, lowering overall TCO
Product Overview
The Lenovo 1m Passive 25G SFP28 DAC Cable (7Z57A03557) is a high-performance networking solution designed for short-range, high-bandwidth 25Gbps connectivity. It features SFP28 male connectors on both ends and provides a direct attach copper (DAC) solution for cost-efficient interconnects. This cable is TAA compliant and manufactured in Mexico, making it suitable for enterprise and government-grade networks. The passive design ensures low power usage, low latency, and highly reliable operation in dense data center environments.
Specifications
Product Overview
Physical & Environmental
Cable Jacket Material | PVC |
RoHS Compliant | Yes |
Operating Temperature Range | 0°C to 70°C |
Storage Temperature Range | -40°C to 85°C |
Humidity (Non-condensing) | 10% to 90% |
Bend Radius | 30 mm minimum |
Cable Outer Diameter | Approximately 4.2 mm |
Cloud Management & Licensing
Cloud Managed | No |
Licensing Requirements | Not applicable |
Interfaces
Connector 1 | SFP28 Male |
Connector 2 | SFP28 Male |
Interface Standard | IEEE 802.3by (25G Ethernet) |
Compatibility | SFP28-compliant devices |
Transmission Medium | Copper |
Application | Intra-rack and inter-rack data center connectivity |
Port Type | Hot-pluggable SFP28 |
Compliance & Origin
Country of Origin | Mexico |
TAA Compliant | Yes |
Certifications | CE, FCC, RoHS |
Safety Standards | UL Certified |
Manufacturing Standards | ISO 9001 / ISO 14001 |
UPC | 889488421954 |
Advanced Security Features
Hardware Encryption | No |
Tamper Evident | No |