Product Overview
The T DQ4CND N00 is a 100G QSFP28 to 4x 25G SFP28 passive direct attach copper (DAC) breakout cable, designed for short-reach, high-speed interconnects within data centers and high-performance computing environments. It enables cost-effective 1-to-4 port breakout connectivity between a 100G QSFP28 port and four 25G SFP28 ports, ideal for top-of-rack (ToR) switch-to-server deployments. This plug-and-play cable assembly offers low latency, low power consumption, and reliable signal integrity.
Product Details
| Attribute | Description |
| Product Name | T DQ4CND N00 |
| Cable Type | Passive Direct Attach Copper Cable (DAC) |
| Form Factor | QSFP28 to 4x 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-configured (commonly 0.5 m to 3 m) |
| Conductor Material | Twinax copper |
| Application | Switch-to-server breakout, ToR, midplane, storage interconnects |
| Operating Temperature | 0C to 70C |
Key Features
QSFP28 to 4x SFP28 passive breakout copper cable
Supports 100G Ethernet breakout to 4x 25G SFP28 ports
Ideal for short-reach switch-to-server interconnects
Low power, low latency, and high signal integrity
Plug-and-play solution, no external transceivers required
Compatible with SFF-8636 and QSFP28/SFP28 MSA standards
RoHS compliant and EMI-shielded
Technical Specifications
| Specification | Value |
| Interface | QSFP28 to 4 x SFP28 |
| Data Rate | 100 Gbps (4 x 25 Gbps) |
| Signal Type | NRZ |
| Cable Type | Passive Copper Twinax |
| Length Options | Typically 0.5 m, 1 m, 2 m, 3 m |
| Connector Type | QSFP28 / SFP28 |
| Operating Temperature | 0C to 70C |
| Voltage Supply | 3.3V |
| RoHS Compliance | Yes |
| EMI Shielding | Yes |
Similar Models Comparison
| Model Name | Interface | Data Rate | Max Length | Cable Type | Use Case |
| T DQ4CND N00 | QSFP28 to 4x SFP28 | 100G | 3 m | Passive Copper DAC | Switch-to-server breakout |
| QSFP28-4SFP28-1M | QSFP28 to 4x SFP28 | 100G | 1 m | Passive Copper DAC | Rack-level interconnect |
| QSFP28-SFP28-AOC | QSFP28 to 4x SFP28 | 100G | 5-20 m | Active Optical | Extended ToR/aggregation use |
| QSFP28-2SFP28-N00 | QSFP28 to 2x SFP28 | 50G | 3 m | Passive Copper DAC | Cost-efficient deployments |
