Cisco Compatible QSFP-H40G-CU2M Twinax Cable | 40G QSFP+ Direct Attach Copper, 2 Meter
Product Overview
The Cisco Compatible QSFP-H40G-CU2M Twinax Cable is a high-performance 40Gbps QSFP+ Direct Attach Copper (DAC) passive cable designed for short-range, high-speed connectivity in data centers and enterprise networks. With a cable length of 2 meters, it is ideal for in-rack and adjacent rack connections between switches, servers, and storage systems.
Fully compatible with Cisco networking equipment, this DAC cable delivers low latency, low power consumption, and reliable signal integrity, making it a cost-effective alternative to optical transceivers for short-distance 40G deployments.
Key Features
- Supports 40Gbps data rate (4×10G lanes)
- Passive Twinax copper cable design
- Ultra-low latency and low power consumption
- Fully compatible with Cisco QSFP+ interfaces
- Hot-pluggable QSFP+ connectors
- Plug-and-play installation
- Cost-effective alternative to fiber optics
- 100% tested for compatibility and performance
Technical Specifications
General Parameters
- Product Type: Direct Attach Copper (DAC) Cable
- Form Factor: QSFP+ to QSFP+
- Data Rate: 40Gbps (4×10Gbps)
- Cable Type: Passive Twinax Copper
Electrical Characteristics
- Stable high-speed signal transmission
Mechanical Specifications
- Jacket Material: PVC / LSZH (optional)
- Bend Radius: Standard DAC compliance
Environmental
- Operating Temperature: 0°C to 70°C
- Storage Temperature: -40°C to 85°C
Compliance
- Fully compatible with Cisco platforms
Applications
- Top-of-Rack (ToR) switching
- Switch-to-switch 40G interconnects
- Server and storage connectivity
- High-density data center deployments
- Short-distance aggregation links
Why Choose This Product
The Cisco-compatible QSFP-H40G-CU2M DAC cable provides an excellent balance between performance and flexibility for short-range 40G connections. Compared to optical modules, it offers:
- Reduced power consumption
- Simplified cabling (no optics required)
- Reliable performance for high-speed interconnects
It is widely used in modern data centers where efficiency and cost control are critical.
When to Choose This Cable
Choose QSFP-H40G-CU2M if:
✔ Distance is within 2 meters
✔ Devices are in the same or adjacent racks
✔ Low latency is required
✔ Budget optimization is important
Choose optical solutions if:
✔ Distance exceeds 5–7 meters
✔ Flexible routing or structured cabling is needed
✔ Long-distance scalability is required
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