Product Type | Direct Attach Copper (DAC) Cable |
Form Factor | Passive twin-axial cable |
Cable Length | 2 m |
Data Rate | 800 Gbps (aggregated) |
Split Configuration | 1x OSFP800 to 2x OSFP400 |
Application | High-speed short-reach interconnect |
Typical Use Case | Data center and enterprise networking |
Power Consumption | Low-power passive cable |
Cable Type | Passive Copper Twinax |
Lenovo OSFP800 to 2xOSFP400 DAC Cable, 2m (4X97A81829)
Key Benefits

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- Enables cost-effective 800G to 2x400G connectivity using a single cable setup
- Reduces power usage with passive copper design while maintaining high signal integrity
- Optimized for Lenovo networking environments requiring reliable short-range interconnects
Product Overview
The Lenovo OSFP800 to 2xOSFP400 DAC (2M), model 4X97A81829, is a Direct Attach Cable engineered for short-distance, high-speed connectivity. With a 2-meter passive copper construction and dual-headed OSFP design, it bridges 800G and 2x400G device interfaces. Ideal for data centers and high-throughput networks, it provides a low-latency, power-efficient alternative to optical solutions. While COO and TAA compliance details are pending, Lenovo's enterprise-grade build quality ensures strong signal integrity and robust performance in modern infrastructure settings.
Specifications
Product Overview
Physical & Environmental
Cable Jacket Material | PVC |
Minimum Bend Radius | 30 mm (typical) |
Connector Housing Material | Metal with EMI shielding |
Operating Temperature Range | 0°C to 70°C |
Storage Temperature Range | -40°C to 85°C |
Humidity (Operating) | 10% to 85% (non-condensing) |
Humidity (Non-Operating) | 5% to 95% (non-condensing) |
Cable Color | Black |
Product Weight | Approx. 0.5 kg |
Cloud Management & Licensing
Cloud Managed | No |
Licensing Requirements | None |
Firmware Upgradable | No |
Interfaces
Left Connector Type | 2x OSFP400 |
Right Connector Type | OSFP800 |
Connector Gender | Male to Male |
Interface Standard | QSFP-DD and OSFP compatible |
Port Compatibility | Compatible with OSFP/OSFP800-compliant ports |
Transmission Mode | Passive direct attach |
Data Transfer Rate per Channel | Up to 100 Gbps per lane |
Lane Count | 8 lanes per OSFP port |
Compliance & Origin
Country of Origin | |
TAA Compliant | |
RoHS Compliant | Yes |
Halogen Free | Yes |
EMI Shielding | Yes (suitable for data center environments) |
ISO/IEC Standards | Compliant with SFF-8636, SFF-8679 profiles |
Advanced Security Features
Encryption Support | No |
Secure Boot or Authentication | No |