Product Overview
The T DQ4CNL N00 is a 100G QSFP28 to 4x 25G SFP28 passive direct attach copper (DAC) breakout cable, optimized for short-reach, high-density data center interconnects. This high-performance, cost-effective solution enables 1-to-4 breakout connectivity from a single 100G QSFP28 port to four individual 25G SFP28 ports. Designed with low-latency and zero power consumption, it is ideal for Top-of-Rack (ToR) switch-to-server, network aggregation, and high-performance computing (HPC) applications.
Product Details
| Attribute | Description |
| Product Name | T DQ4CNL N00 |
| Cable Type | Passive Direct Attach Copper Cable (DAC) |
| Form Factor | QSFP28 to 4 x SFP28 |
| Data Rate | 100 Gbps total (4 x 25 Gbps) |
| Transmission Speed | 25 Gbps per channel |
| Interface Type | 1 x QSFP28 ↔ 4 x SFP28 |
| Cable Length | Factory-defined (commonly 0.5 m to 3 m based on code suffix) |
| Conductor Type | Twinax copper |
| Application | ToR switch breakout, data center, HPC, server NIC connections |
| Operating Temperature | 0C to 70C |
Key Features
QSFP28 to 4x SFP28 passive copper breakout
Supports 100G Ethernet split into 4x 25G channels
Hot-pluggable, MSA-compliant
Plug-and-play setup, no optical transceivers required
Ideal for short-reach, in-rack connections
Low power and ultra-low latency performance
EMI shielding for high-signal integrity
RoHS compliant and environmentally friendly
Technical Specifications
| Specification | Value |
| Interface | QSFP28 to 4 x SFP28 |
| Total Data Rate | 100 Gbps |
| Channel Speed | 25 Gbps each |
| Cable Type | Passive Copper DAC |
| Length Options | Typically 0.5 m, 1 m, 2 m, 3 m |
| Connector Type | QSFP28 / SFP28 |
| Conductor Material | Twinax copper |
| Operating Temperature | 0C to 70C |
| Compliance | SFF-8636, QSFP28/SFP28 MSA |
| RoHS Compliance | Yes |
Similar Models Comparison
| Model Name | Interface | Type | Data Rate | Max Length | Application |
| T DQ4CNL N00 | QSFP28 to 4x SFP28 | Passive DAC | 100G | 3 m | Switch-to-server breakout |
| T DQ4CND N00 | QSFP28 to 4x SFP28 | Passive DAC | 100G | 3 m | High-density aggregation |
| QSFP28-AOC-4SFP28 | QSFP28 to 4x SFP28 | AOC | 100G | Up to 30 m | Rack-to-rack optical link |
| QSFP28-4SFP28-1M | QSFP28 to 4x SFP28 | Passive DAC | 100G | 1 m | ToR switch breakout |
