ENET 2.5M 400GBASE-CR8 QSFP-DD Passive DAC
The 400GBASE-CR8 QSFP-DD passive direct attach cable delivers ultra-high-speed connectivity for next-generation data center infrastructure. This 2.5-meter QSFP-DD to QSFP-DD passive DAC is engineered for Arista-compatible environments, providing reliable 400G connections without active components. Ideal for enterprise networks, cloud environments, and high-performance computing clusters requiring low-latency, cost-effective interconnect solutions.
Key Features
- 400GBASE-CR8 passive direct attach cable technology for maximum reliability
- QSFP-DD connector compatibility on both ends for seamless integration
- 2.5-meter length optimized for rack-to-rack and switch-to-server deployments
- Arista-certified for guaranteed performance and interoperability
- Low-latency passive design eliminates active component power consumption
- Cost-effective alternative to active optical cables for short-reach applications
- Copper-based construction for superior signal integrity
Technical Specifications
| Specification |
Details |
| Manufacturer |
ENET SOLUTIONS |
| Part Number |
CAB-D-D-400G-2.5M-ENC |
| Cable Type |
400GBASE-CR8 Passive Direct Attach Cable |
| Connector Type |
QSFP-DD to QSFP-DD |
| Cable Length |
2.5 meters |
| Data Rate |
400 Gbps |
| Compatibility |
Arista Networks |
| Transmission Type |
Passive (No Active Components) |
| Application |
Data Center, High-Performance Computing, Enterprise Networks |
Frequently Asked Questions
What is a 400GBASE-CR8 passive DAC cable?
A 400GBASE-CR8 passive direct attach cable is a copper-based interconnect that delivers 400 Gigabit Ethernet speeds without active electronics. The passive design reduces power consumption and latency, making it ideal for short-distance data center connections between switches, servers, and storage systems.
Is this QSFP-DD cable compatible with Arista switches?
Yes, this ENET 400GBASE-CR8 QSFP-DD passive DAC is Arista-certified and fully compatible with Arista 400G switch platforms. It provides plug-and-play connectivity without requiring firmware updates or additional configuration.
What is the maximum distance for this 2.5M passive DAC?
The 2.5-meter length is optimized for intra-rack and adjacent-rack deployments in data center environments. Passive DAC cables typically support reliable transmission up to 5-7 meters depending on signal quality requirements and switch specifications.
How does a passive DAC compare to active optical cables?
Passive 400GBASE-CR8 QSFP-DD cables offer lower cost and power consumption compared to active optical alternatives, with zero latency overhead. They're ideal for short-reach applications; active cables are better suited for longer distances or environments requiring extended reach capabilities.
