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Axiom MCP7F00-A002R30N-AX 100GBASE-CR4 QSFP28 to 4 SFP28 Passive DAC Mellanox Compatible 2m Twinaxial Network Cable
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Product Features
Technical Overview
This direct attach cable implements the 100GBASE-CR4 Ethernet standard, utilizing a QSFP28 connector on one end and four SFP28 connectors on the other. The passive design means no signal retiming or amplification occurs within the cable assembly, resulting in lower power consumption and reduced latency compared to active optical or copper alternatives.
The 6.6-foot (2-meter) length provides flexibility in top-of-rack and end-of-row switch configurations, while the twinaxial cable construction offers superior shielding against electromagnetic interference. The cable is engineered for hot-pluggable operation, allowing for installation and removal without powering down connected equipment.
Key Product Advantages
This DAC cable delivers several operational benefits for network administrators seeking reliable, high-speed interconnects without the complexity and cost of fiber optics.
Cost-Effective Connectivity
Eliminates the need for separate optical transceivers and fiber patch cables, reducing both capital expenditure and ongoing maintenance costs while providing equivalent performance for short-reach applications.
- No transceiver purchases required
- Lower total cost of ownership
- Simplified inventory management
Power Efficiency
The passive design consumes zero additional power beyond what the host ports provide, contributing to lower energy bills and reduced heat generation in densely populated network cabinets.
- Zero external power requirement
- Reduced thermal load
- Improved PUE metrics
Compatibility Assurance
Engineered for compatibility with Mellanox networking equipment and tested to ensure reliable operation with switches, routers, and OEM modules from major vendors.
- Mellanox compatible
- Broad device support
- Vendor-agnostic operation
Deployment / Use Cases
This QSFP28 to SFP28 breakout cable is specifically designed for scenarios where high-bandwidth connectivity must be distributed across multiple lower-speed ports without sacrificing performance or reliability.
In leaf-spine data center architectures, the cable efficiently connects 100GbE spine switches to 25GbE leaf switches, optimizing bandwidth utilization while maintaining low latency. For storage area networks, it provides reliable interconnects between storage controllers and JBOD enclosures, ensuring consistent data throughput for critical applications.
Data Center Interconnect
Connect top-of-rack switches to aggregation switches in hyper-converged and cloud infrastructure deployments, providing scalable bandwidth for virtualized workloads and containerized applications.
High-Performance Computing
Establish low-latency connections between compute nodes and storage arrays in HPC clusters, ensuring minimal data transfer delays for scientific simulations and analytical processing.
Highlights
- 100GBASE-CR4 QSFP28 to 4 SFP28 passive direct attach copper cable
- 6.6-foot (2-meter) twinaxial construction for reliable short-reach connections
- 100 Gbit/s aggregate bandwidth with four independent 25 Gbit/s channels
- Passive design requires no external power and generates minimal heat
- Compatible with Mellanox networking equipment and various switch platforms
- Hot-pluggable for installation without system downtime
- RoHS compliant for environmentally responsible deployment
- Lifetime warranty for long-term reliability assurance
Specifications
| Specifications | |
|---|---|
| Manufacturer | Axiom Memory Solutions |
| Manufacturer Part Number | MCP7F00-A002R30N-AX |
| Brand Name | Axiom |
| Product Name | 100GBASE-CR4 QSFP28 to 4 SFP28 Passive DAC Mellanox Compatible 2m |
| Product Type | Network Cable |
| Technical Information | |
| Cable Type | Twinaxial |
| Cable Length | 6.6 ft (2 m) |
| Connector Type on First End | QSFP28 Network |
| Connector on First End Details | 1 x QSFP28 Network |
| Connector Type on Second End | SFP28 Network |
| Connector on Second End Details | 4 x SFP28 Network |
| Device Supported | Switch,OEM Module,Router,Network Device |
| Data Transfer Rate | 100 Gbit/s |
| Features | Passive |
| Miscellaneous | |
| Environmentally Friendly | Yes |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS) |
| Warranty | |
| Limited Warranty | Lifetime |
FAQ
What is the difference between this passive DAC and an active optical cable?
This passive direct attach copper cable uses electrical signaling without signal retiming or amplification, making it more power-efficient and cost-effective for distances up to 3 meters. Active optical cables convert electrical signals to optical and back, supporting longer distances but requiring more power and higher cost. For short-reach applications within racks, passive DAC provides equivalent performance with better economics.
Which devices are compatible with this QSFP28 to SFP28 breakout cable?
The cable is engineered for compatibility with Mellanox networking equipment and supports switches, routers, OEM modules, and various network devices from major vendors. It implements standard 100GBASE-CR4 and 25GBASE-CR protocols, ensuring interoperability with any equipment supporting these Ethernet standards. Always verify specific compatibility with your device manufacturer's documentation before deployment.
What is the maximum distance supported by this 2-meter DAC cable?
This passive twinaxial cable is designed for short-reach applications up to 3 meters, with the 2-meter length providing optimal signal integrity for most within-rack connections. Passive DAC cables experience signal attenuation over distance, so for runs beyond 3 meters, consider active copper or optical solutions. The 2-meter length offers flexibility for connecting adjacent equipment in standard 19-inch or 23-inch racks.
Does this cable support Digital Diagnostic Monitoring (DDM)?
As a passive direct attach copper cable, it does not implement Digital Diagnostic Monitoring capabilities. DDM functions like temperature monitoring, voltage measurement, and bi-directional optical power monitoring are typically available in active optical modules and some active copper cables. For environments requiring extensive monitoring, consider complementary management tools at the switch or system level.
| Qty | Price | Available |
|---|
