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40G QSFP+ to QSFP+ Direct Attach Copper Cable 28AWG Passive 7M QDR
Categories:
Product Highlights:
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40G QSFP+ to QSFP+ DAC cable, 28AWG, Passive, 7M
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Supports 40G Ethernet (40GBASE-CR4) and QDR InfiniBand
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Ideal for switches, routers, HBAs, and storage interconnects
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FiberMania provides OEM/ODM customization, fast delivery, and quality assurance for tailored data center solutions
Table of Contents
Description
The 40G QSFP+ to QSFP+ Direct Attach Copper (DAC) Cable is engineered for high-speed data center interconnects and short-range connectivity. This 7-meter passive cable utilizes 28AWG copper wires to ensure reliable signal transmission between QSFP+ ports, delivering 40Gbps bandwidth for InfiniBand and Ethernet applications.
Designed for low-latency environments, the DAC cable is ideal for networking equipment, including switches, routers, HBAs, and computer cluster cross-connects. Its plug-and-play functionality requires no additional configuration, simplifying installation and reducing deployment time. FiberMania manufactures these cables to strict quality standards, guaranteeing durability, consistent performance, and long service life.
This passive DAC cable is suitable for high-density setups where energy efficiency and signal integrity are critical, providing a cost-effective solution for short-distance, high-speed connections.
Specification
| Cable Type | Copper |
|---|---|
| Active / Passive | Passive |
| Connector Type | QSFP+ to QSFP+ |
| Cable Gauge | 28 AWG |
| Cable Length | 7 m |
| Data Rate / Protocol | 40 Gbps QDR |
| Features / Notes | High-speed QDR passive |
Features
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QSFP+ to QSFP+ connectors for seamless interconnect
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28AWG copper wire for low resistance and high-speed performance
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Passive design for energy-efficient operation
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Plug-and-play installation with no configuration required
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Supports 40Gbps data rate for QDR InfiniBand and 40G Ethernet
Applications
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40Gigabit Ethernet (40GBASE-CR4)
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InfiniBand SDR, DDR, and QDR networks
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Networked storage systems
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Switch-to-switch, router-to-router, and HBA connectivity
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Computer cluster cross-connects and data center interconnects
Q&A
Q1: Can this cable support 40G Ethernet and QDR InfiniBand simultaneously?
A1: Yes, it is fully compatible with both standards for high-speed connectivity.
Q2: Is the 7-meter length fixed or customizable?
A2: FiberMania offers custom lengths through our OEM/ODM services.
Q3: Does this cable require any external power or configuration?
A3: No, the passive DAC design is plug-and-play with no external power needed.
Q4: Can this DAC be used in high-density switch racks?
A4: Yes, its compact design is suitable for short-range high-density installations.
Q5: What testing ensures signal integrity?
A5: All cables undergo insertion loss, return loss, and crosstalk testing to guarantee reliable performance.
Featured DACs & AOCs Comparison Guide
| SKU | Cable Type | Data Rate | Form Factor A | Form Factor B | Wire Type | Length |
| AOC-100GQSFP28-5 | AOC | 100G | QSFP28 | QSFP28 | OM4 Fiber Cable | 5M |
| AOC-10GSFP-10 | AOC | 10G | SFP+ | SFP+ | OM4 Fiber Cable | 10M |
| AOC-25GSFP28-3 | AOC | 25G | SFP28 | SFP28 | OM4 Fiber Cable | 3M |
| AOC-40GQSFP-10 | AOC | 40G | QSFP+ | QSFP+ | OM3 Fiber Cable | 10M |
| AOC-QSFP-10G4SFP-5 | AOC | 40G | QSFP+ | 4*SFP+ | OM3 Fiber Cable | 5M |
| AOC-QSFP28-4SFP28-3 | AOC | 100G | QSFP28 | 4×SFP28 | OM3 Fiber Cable | 3M |
| DAC-100GQSFP28-25G4SFP28-P5 | DAC | 100G | QSFP28 | 4×SFP28 | 24AWG | 5M |
| DAC-100GQSFP28-P3 | DAC | 100G | QSFP28 | QSFP28 | 26AWG | 3M |
| DAC-10GCX4-P05 | DAC | 10G | CX4 | CX4 | 28AWG | 3M |
| DAC-10GSFP-P10 | DAC | 10G | SFP+ | SFP+ | 24AWG | 10M |
| DAC-400GQSFP-P5 | DAC | 400G | QSFP-DD | QSFP-DD | 30AWG | 5M |
| DAC-40GQSFP-P07 | DAC | 40G | QSFP+ | QSFP+ | 28AWG | 7M |
| DAC-QSFP-10G4SFP-P03 | DAC | 40G | QSFP+ | 4 * SFP+ | 30AWG | 3M |
| DAC-SFP-P05 | DAC | 1.25G | SFP | SFP | 30AWG | 5M |
Quality Qulifications and Compliance
To get the detailed certification, please go to the Compliance.
Please Note: Our products comply with all internationally recognized and industry-standard specifications. For customized or special requirement products, we carry out testing and standards in accordance with the conformity criteria specified in the contract.
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