100GBase-CU QSFP28 to 4xSFP28 Direct Attach Cable
The AddOn DAC-Q28-4SFP28-25G-0-5M-AO is a Dell-compatible 100GBase-CU QSFP28 direct attach cable engineered for high-speed data center and networking environments. This passive Twinax cable delivers reliable 100G to 4x25G connectivity over short distances with zero power consumption, making it an ideal cost-effective solution for enterprise infrastructure. Built to TAA specifications and tested for Dell compatibility, this QSFP28 to 4xSFP28 cable provides the performance and compliance your mission-critical applications demand.
Key Features
-
100GBase-CU QSFP28 to 4xSFP28 breakout configuration for flexible port expansion
- Passive copper Twinax design eliminates active components and power requirements
- 50cm (0.5 meter) maximum reach optimized for rack-to-rack and switch-to-server connectivity
- TAA-compliant construction meets federal procurement requirements
- Dell-certified compatibility ensures seamless integration with existing infrastructure
- Low-latency, high-bandwidth performance for demanding data center workloads
- Cost-effective alternative to active optical cables for short-reach applications
Technical Specifications
| Specification |
Details |
| Manufacturer |
ADD-ON |
| Part Number |
DAC-Q28-4SFP28-25G-0-5M-AO |
| Cable Type |
100GBase-CU QSFP28 to 4xSFP28 Direct Attach |
| Technology |
Passive Twinax Copper |
| Maximum Reach |
0.5 meters (50cm) |
| Data Rate |
100 Gbps (QSFP28) / 25 Gbps per SFP28 lane |
| Connector Type |
QSFP28 (male) to 4x SFP28 (male) |
| Compliance |
TAA, Dell Compatible |
| Power Consumption |
Passive (0W) |
| Operating Temperature |
0°C to 70°C |
Frequently Asked Questions
What is a 100GBase-CU QSFP28 to 4xSFP28 direct attach cable used for?
This QSFP28 direct attach cable breaks out a single 100G port into four 25G connections, enabling flexible port density in data centers. It's ideal for connecting high-speed switches to servers, storage arrays, and network appliances over short distances without active electronics.
Why choose passive Twinax over active optical cables?
Passive Twinax cables eliminate the cost and complexity of active components, require no power, generate no heat, and deliver superior latency performance. For distances up to 50cm, passive copper provides the most economical and reliable solution for 100GBase-CU connectivity.
Is this cable compatible with Dell systems?
Yes. The AddOn DAC-Q28-4SFP28-25G-0-5M-AO is Dell-certified and fully compatible with Dell PowerEdge servers, PowerSwitch networking equipment, and other Dell infrastructure supporting QSFP28 and SFP28 ports.
What does TAA compliance mean?
TAA (Trade Agreements Act) compliance ensures the product meets U.S. federal procurement standards, making it eligible for government and enterprise contracts requiring domestic or approved-source components.
