CAB-Q-4S-100G-3M Arista Compatible, 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable - 3m
Warranty: Lifetime
Quick answer: The CAB-Q-4S-100G-3M Arista-compatible cable is a 3-meter passive breakout DAC that splits one 100G QSFP28 port into four 25G SFP28 connections, for linking a switch to four servers or 25G ports in the same rack. It is coded to work in Arista switches that call for CAB-Q-4S-100G-3M. Resilient Tec sells it new, with a lifetime warranty and free US shipping from Knoxville, TN.
Arista Compatible 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable - 3 Meters
This third-party 100G QSFP28 to 4x25G SFP28 Passive Breakout DAC cable is fully compatible with Arista CAB-Q-4S-100G-3M, delivering reliable 100GbE to 4x25GbE connectivity for short-range high-speed networking applications up to 3 meters. Ideal for enterprise networking, AI/HPC clusters, top-of-rack (ToR) switching, and hyperscale data centers requiring low-latency breakout connectivity.
Built to QSFP28 MSA standards, it features QSFP28 to 4xSFP28 connectivity and pre-programmed EEPROM compatibility for seamless deployment with Arista networking platforms. Backed by our lifetime warranty and rigorous testing—enjoy significant savings versus genuine Arista OEM cables while maintaining reliable, high-performance connectivity.
Key Features
- Massive Cost Savings: Premium compatible breakout DAC cables at a fraction of OEM pricing—ideal for scaling enterprise and AI networking environments affordably.
- Plug-and-Play Compatibility: Pre-programmed EEPROM enables seamless deployment with Arista networking platforms requiring Arista P/N CAB-Q-4S-100G-3M.
- 100G to 4x25G Breakout Connectivity: Supports high-density breakout configurations for switches, servers, and storage environments.
- Low-Latency Passive Copper Design: Passive Twinax construction minimizes latency and power consumption.
- Optimized for Data Centers: Ideal for top-of-rack switching, spine-leaf architectures, and high-throughput storage fabrics.
- Reliable Short-Range Connectivity: Supports stable 100GbE to 4x25GbE transmission up to 3 meters.
- Enhanced EMI Design: Designed to minimize electromagnetic interference in dense networking environments.
Technical Specifications
- Data Rate: 100GbE to 4x25GbE
- Cable Type: Passive DAC (Direct Attach Copper) Breakout Cable
- Connector Type: QSFP28 to 4xSFP28
- Cable Length: 3 Meters
- Wire AWG: 28AWG Twinax
- Input Voltage: 3.3V
- Operating Temperature: 0°C to 70°C
- Standards Compliance: QSFP28 MSA compliant
- Compatibility: 100GbE breakout compliant
Compatibility
Frequently Asked Questions
Does the switch port need to be configured?
Yes. Set the QSFP28 port to 4 x 25G breakout mode in the switch configuration; each SFP28 leg then appears as its own 25G interface.
Will the SFP28 ends work in 10G SFP+ ports?
Usually not. The four legs run at 25G, so the ports on that end need to support 25G (SFP28). For 10G servers, use a 40G QSFP+ to 4 x 10G SFP+ breakout instead.
Compatible cable or genuine Arista: what is the difference?
This is a new third-party cable programmed (coded) to be recognized by Arista equipment that calls for this part number, at a fraction of the Arista-branded price. Choose the genuine Arista part only if your support contract or internal policy requires Arista-branded parts.
What warranty and shipping come with it?
Resilient Tec's lifetime warranty. US standard shipping is free with no minimum, and orders typically arrive in 3 to 5 days.
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CAB-Q-Q-100G-1M Arista Compatible, 100G QSFP28 Passive DAC Cable
CAB-S-S-25G-1M Arista Compatible, 25G SFP28 Passive DAC Cable
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Quick answer: The CAB-Q-4S-100G-3M Arista-compatible cable is a 3-meter passive breakout DAC that splits one 100G QSFP28 port into four 25G SFP28 connections, for linking a switch to four servers or 25G ports in the same rack. It is coded to work in Arista switches that call for CAB-Q-4S-100G-3M. Resilient Tec sells it new, with a lifetime warranty and free US shipping from Knoxville, TN.
Arista Compatible 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable - 3 Meters
This third-party 100G QSFP28 to 4x25G SFP28 Passive Breakout DAC cable is fully compatible with Arista CAB-Q-4S-100G-3M, delivering reliable 100GbE to 4x25GbE connectivity for short-range high-speed networking applications up to 3 meters. Ideal for enterprise networking, AI/HPC clusters, top-of-rack (ToR) switching, and hyperscale data centers requiring low-latency breakout connectivity.
Built to QSFP28 MSA standards, it features QSFP28 to 4xSFP28 connectivity and pre-programmed EEPROM compatibility for seamless deployment with Arista networking platforms. Backed by our lifetime warranty and rigorous testing—enjoy significant savings versus genuine Arista OEM cables while maintaining reliable, high-performance connectivity.
Key Features
- Massive Cost Savings: Premium compatible breakout DAC cables at a fraction of OEM pricing—ideal for scaling enterprise and AI networking environments affordably.
- Plug-and-Play Compatibility: Pre-programmed EEPROM enables seamless deployment with Arista networking platforms requiring Arista P/N CAB-Q-4S-100G-3M.
- 100G to 4x25G Breakout Connectivity: Supports high-density breakout configurations for switches, servers, and storage environments.
- Low-Latency Passive Copper Design: Passive Twinax construction minimizes latency and power consumption.
- Optimized for Data Centers: Ideal for top-of-rack switching, spine-leaf architectures, and high-throughput storage fabrics.
- Reliable Short-Range Connectivity: Supports stable 100GbE to 4x25GbE transmission up to 3 meters.
- Enhanced EMI Design: Designed to minimize electromagnetic interference in dense networking environments.
Technical Specifications
- Data Rate: 100GbE to 4x25GbE
- Cable Type: Passive DAC (Direct Attach Copper) Breakout Cable
- Connector Type: QSFP28 to 4xSFP28
- Cable Length: 3 Meters
- Wire AWG: 28AWG Twinax
- Input Voltage: 3.3V
- Operating Temperature: 0°C to 70°C
- Standards Compliance: QSFP28 MSA compliant
- Compatibility: 100GbE breakout compliant
Compatibility
Frequently Asked Questions
Does the switch port need to be configured?
Yes. Set the QSFP28 port to 4 x 25G breakout mode in the switch configuration; each SFP28 leg then appears as its own 25G interface.
Will the SFP28 ends work in 10G SFP+ ports?
Usually not. The four legs run at 25G, so the ports on that end need to support 25G (SFP28). For 10G servers, use a 40G QSFP+ to 4 x 10G SFP+ breakout instead.
Compatible cable or genuine Arista: what is the difference?
This is a new third-party cable programmed (coded) to be recognized by Arista equipment that calls for this part number, at a fraction of the Arista-branded price. Choose the genuine Arista part only if your support contract or internal policy requires Arista-branded parts.
What warranty and shipping come with it?
Resilient Tec's lifetime warranty. US standard shipping is free with no minimum, and orders typically arrive in 3 to 5 days.
You Might Also Need
CAB-Q-Q-100G-1M Arista Compatible, 100G QSFP28 Passive DAC Cable
CAB-S-S-25G-1M Arista Compatible, 25G SFP28 Passive DAC Cable
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