Cisco Compatible QSFP-H40G-CU3M Twinax Cable | 40G QSFP+ Direct Attach Copper, 3 Meter
Product Overview
The Cisco Compatible QSFP-H40G-CU3M 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 3 meters, it offers an ideal balance between reach, performance, and cost—perfect for connections within racks or between adjacent racks.
Fully compatible with Cisco networking equipment, this DAC cable provides low latency, low power consumption, and reliable signal integrity, making it an efficient 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-CU3M DAC cable is widely used for short-range 40G connections where both performance and cost efficiency are critical. Compared to optical solutions, it offers:
- Lower total cost of ownership
- Reduced power consumption
- Simplified installation (no optics required)
- Reliable performance in high-density environments
It is an ideal solution for modern data centers seeking efficient and scalable connectivity.
When to Choose This Cable
Choose QSFP-H40G-CU3M if:
✔ Distance is within 3 meters
✔ Devices are located within or between nearby racks
✔ Low latency is required
✔ Cost efficiency is a priority
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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