Cisco Compatible QSFP-H40G-CU1M Twinax Cable | 40G QSFP+ Direct Attach Copper, 1 Meter
Product Overview
The Cisco Compatible QSFP-H40G-CU1M Twinax Cable is a high-performance 40Gbps QSFP+ Direct Attach Copper (DAC) passive cable designed for ultra-high-speed, short-range connectivity in modern data centers and enterprise networks. With a cable length of 1 meter, it is ideal for in-rack connections between switches, servers, and storage devices.
Fully compatible with Cisco networking equipment, this DAC cable delivers low latency, minimal power consumption, and excellent signal integrity, making it a cost-effective alternative to optical transceivers for short-distance 40G interconnects.
Key Features
- Supports 40Gbps data rate (4×10G channels)
- Passive Twinax copper cable design
- Ultra-low latency and low power consumption
- Fully compatible with Cisco QSFP+ interfaces
- Hot-pluggable QSFP+ connectors
- 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 lanes)
- 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 network aggregation
Why Choose This Product
The Cisco-compatible QSFP-H40G-CU1M DAC cable offers a highly efficient solution for short-range 40G connectivity. Compared to optical solutions, it provides:
- Lower total cost of ownership
- Reduced power consumption
- Simplified installation (no fiber patch cords required)
- Reliable performance for high-density environments
It is ideal for data centers requiring high bandwidth with cost efficiency.
When to Choose DAC for 40G
Choose QSFP-H40G-CU1M if:
✔ Distance is within 1 meter
✔ Devices are in the same rack
✔ Ultra-low latency is required
✔ Cost optimization is a priority
Choose optical solutions if:
✔ Distance exceeds 5–7 meters
✔ Flexible cabling or structured fiber is needed
✔ Long-distance scalability is required
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