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Direct Attach Cable(DAC Cable)

DAC Direct Attach Copper Cables are further divided into passive copper cable and active copper cableIn most data center, most server to server connections require 2-5 meters, while rack to rack connections are required to be connected by 8-12 meters cables.SEESUO offers a wide range of products for 0.5m to 15m lengths and in QSFP+, SFP+ form factors. The unique EEPROM technique has been used to ensure the DACs are compatible with different brands on the original switches and routers.


● Lower Power Consumption

● Compliant with SFF-8431 MSA

● Replace optical transceiver for short distance

● Active DAC can reach up to 15m

Direct Attach Cable(DAC Cable)Feature


● 10G~100G Ethernet

● Fibre channel

● Data center and in-rack connection

Direct Attach Copper (DAC) Cable

Volex is a leading manufacturer and supplier of Direct Attach Copper (DAC) cable. The Volex DAC cable product family is comprised of cable assemblies with Small Form-factor Pluggable (SFP), Quad Small Form-factor Pluggable (QSFP) and Octal Small Form-factor Pluggable (OSFP) single and double density series modules. Volex offers a full line of active and passive direct attach copper cables from 10Gbps SFP+ to 800Gbps OSFP and QSFP-DD800 designed to meet the requirements of the most demanding data centres with industry leading quality and reliability.

Direct Attach Cable (DAC) is widely applied in storage, data, and high-performance computing connectivity. The DAC cables are used to connect one mobility access switch with another when forming a stack. FiberOnSale supplies various kinds of high speed interconnect DAC cable assemblies including 10G SFP+ Cables, 40G QSFP+ Cables, and 120G CXP Cables. All of these direct attach cables can meet the ever growing need to cost-effectively deliver more bandwidth, and they can be customized in different length to meet customers' requirements.

What is Direct Attach Copper (DAC) Cable?

Direct attach cables are factory terminated copper cable assemblies with SFP, QSFP and OSFP single and double density series pluggable modules.

Low cost and low power consumption with no heat produced and very high reliability make passive DAC the preferred choice for short distance (1-5M) data centre in-rack equipment interconnect application. Active DAC can preserve signal integrity with embedded retimer or redriver extending the reach up to 9M for inter-rack interconnect application. Active DAC also can be an option for cabling high density rack with thinner and more flexible cables.

Benefits of Direct Attach Copper (DAC) Cable

DAC Cables from Volex are optimised for Ethernet, Infiniband and Fibre Channel data connection applications in data centres, with benefits that include:

  • Near-zero power consumption, low heat dissipation, very low cost

  • Complete cable assembly uniquely terminated at the factory to provide the most reliable operation

  • 100% tested for signal integrity with serial number traceability

  • Product customisation available to meet customer specifications

  • Production capacity to meet mega sized global data centre demand

  • Innovative design development to support next-generation interconnect technology and deployment

Features Benefits
Wide AWG range Provides cost, reach, signal integrity margin and cable flexibility optimisation
Passive copper length up to 6 metres Meets industry standard signal integrity requirements up to lengths of 6 metres (varies depending on cable speed)
Unique foam dielectric cable jacket construction Increased flexibility cables while maintaining signal integrity quality
Custom EEPROM programming Programmable to customer requirements
Optimised PCB design Provides superior margin for 24G NRZ, 50G PAM4 and 100G PAM4 signal integrity parameters against standard specification
Advanced wire stripping and cable termination process Eliminate damage to the conductor and shield, prevent dielectric shrink back, protect solder joints, reinforced strain relief, all while maintaining signal integrity, product quality, and operational reliability
LSZH cable jacket and PCB options Environmentally friendly
Custom solutions supported Custom solutions forcible configuration, connector pin repurposing and beyond

Why Choose Volex for Direct Attach Copper (DAC) Cable?

Volex’s engineering teams can customise a solution to a customer’s specific requirements and provide quick turn custom design samples supported by skilled local sales and field applications engineering (FAE) teams. A global factory footprint, which includes tariff-free manufacturing sites, efficient global supply chain and logistics support, enables reduced product lead time and efficient cost management.

By partnering with Volex on data centre high-speed interconnect solutions, customers benefit from strong technical expertise and manufacturing prowess to help future-proof data centres and fulfil infrastructure development and growth goals.

We can provide you Direct Attached Copper Cable Assemblies for SFP+ to SFP+, Direct Attached Copper Cable Assemblies for QSFP+ to QSFP+ and Hybrid Passive Copper QSFP+ to 4x SFP+. Direct Attached Copper Cable Assemblies for SFP+ to SFP+ can support multi-gigabit data rates up to 10.5Gbps. Direct Attached Copper Cable Assemblies for QSFP+ to QSFP+ can support multi-gigabit data rates up to 40Gbps. Hybrid Passive Copper QSFP+ to 4x SFP+ can support multi-gigabit data rates 1.0Gbps -10.3125Gbps per channel.
We promise we could provide you with a high-performance and high-quality Direct Attached Copper Cable series cable. Our DAC has already received good comments from the U.S.A, Europe and India…etc.

10G SFP+ DAC Passive Cable,25G SFP28 DAC Passive Cable,40G QSFP+ DAC Passive Cable,40G QSFP+ To 4 SFP+ DAC Passive Cable,100G QSFP28 DAC Passive Cable,100G QSFP28 to 4 SFP28 DAC Passive Cable. If you need a large quantity ofDirect Attach Cable(DAC Cable)product - Mail us through our E-mail at sales@seesuo.com or request a quote at live chat and our sales manager will contact you shortly.
  • OEM Manufacturer
    SEESUO supports OEM manufacturing by producing products according to the designs and specifications provided by the client. We strictly adhere to commercial confidentiality principles to protect the client's brand and privacy.
  • ODM Manufacturer
    SEESUO has extensive research and development experience and high-quality production management capabilities. We can develop and manufacture products specifically for our clients' brands according to their needs.
  • Customized production
    SEESUO offers highly customized product research and development and manufacturing services with a flexible production model. We are able to meet the small-batch customized production needs of some high-end clients.
  • R&D cooperation
    SEESUO is capable of adapting to the rapidly changing market demands and can collaborate with customers in research and development. We invest resources in R&D to meet customers' specialized requirements and build a strong brand moat.
  • function testing
  • compatibility testing
  • industrial production line
  • adaptive testing
  • data rate testing
  • final inspection
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