Cisco QSFP-H40G-CU3M – 40G QSFP+ Direct Attach Copper (DAC) Cable
The Cisco QSFP-H40G-CU3M 40G QSFP+ Direct Attach Copper Cable is a high-speed, cost-effective networking solution designed for modern data center, enterprise, and cloud infrastructure environments. It provides a reliable 40 Gigabit Ethernet (40GbE) connection between QSFP+ ports, ensuring stable and ultra-fast data transmission over short distances.
This 3-meter Direct Attach Copper (DAC) cable is widely used for server-to-switch, switch-to-switch, and top-of-rack (ToR) networking connections, where high bandwidth and low latency are critical. It eliminates the need for separate optical transceivers, making it a more affordable and energy-efficient alternative to fiber optic solutions.
High-Speed 40G Networking Performance
The Cisco QSFP-H40G-CU3M supports 40Gbps data transfer speed, making it ideal for bandwidth-intensive applications such as virtualization, cloud computing, storage networking, and high-performance computing (HPC). Its passive copper design ensures low power consumption and minimal signal delay, which improves overall network efficiency.
Reliable Direct Attach Copper Design
This QSFP+ DAC cable is built with high-quality copper conductors to ensure strong signal integrity and consistent performance. It provides a stable, plug-and-play connection without the need for manual configuration or additional power sources.
With its durable construction, the cable is suitable for continuous 24/7 operation in enterprise-grade IT environments.
More Key Features
- Supports 40Gbps high-speed Ethernet connectivity
- QSFP+ to QSFP+ Direct Attach Copper (DAC) cable
- 3-meter cable length for rack-to-rack connections
- Passive design with low power consumption
- Ultra-low latency for high-performance networking
- Stable and secure data transmission
- Plug-and-play installation, no configuration required
- Cost-effective alternative to optical transceivers
Technical Specifications for Cisco QSFP-H40G-CU3M
| Specification | Details |
|---|
| Model / Part Number | Cisco QSFP-H40G-CU3M |
| Cable Type | Passive Direct Attach Copper (DAC) Cable |
| Connector Type | QSFP+ to QSFP+ |
| Data Rate | 40 Gbps (40GBASE-CR4) |
| Cable Length | 3 meters (≈9.8 ft) |
| Media | Twinax Copper |
| Application | 40G Ethernet short-reach links (rack-to-rack) |
| Standards Compliance | IEEE 802.3ba (40GBASE-CR4), QSFP+ MSA |
| Operating Temperature | 0 °C to 70 °C (commercial) |
| Storage Temperature | −40 °C to 85 °C |
| Power Consumption | Very low (passive DAC) |
| Pull Tab Color | Orange |
| Typical Use Cases | Data center 40G links, ToR/adjacent racks |
The Cisco QSFP-H40G-CU3M is ideal for:
- Data Center Interconnect (DCI)
- Server-to-switch connections
- Switch-to-switch backbone links
- Cloud computing infrastructure
- Storage Area Networks (SAN)
- Enterprise IT networking systems
- High-performance computing (HPC) environments
Compatibility
This
40G DAC cable is compatible with a wide range of Cisco networking equipment, including:
- Cisco Nexus Series Switches
- Cisco Catalyst Series Switches
- Cisco UCS Servers
- Any QSFP+ 40G supported network devices
Why Choose Cisco QSFP-H40G-CU3M?
- Delivers high-speed 40G connectivity with stable performance
- Reduces network cost compared to fiber optic solutions
- Easy plug-and-play installation
- Low latency and high reliability for mission-critical networks
- Perfect for scalable and modern data center infrastructure
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