CAB-QD-QD-400G-1M Arista Compatible, 400G QSFP-DD Passive DAC Cable - 1m
Warranty: Lifetime
Quick answer: The CAB-QD-QD-400G-1M Arista-compatible cable is a 1-meter passive 400G QSFP-DD to QSFP-DD direct-attach copper (DAC) cable (400GBASE-CR8) for switch-to-switch links in the same rack. It is coded to work in Arista switches that call for CAB-QD-QD-400G-1M. Resilient Tec sells it new, with a lifetime warranty and free US shipping from Knoxville, TN.
Arista Compatible 400G QSFP-DD Passive DAC Cable - 1 Meter
This third-party 400G QSFP-DD Passive DAC cable is fully compatible with Arista CAB-QD-QD-400G-1M, delivering reliable 400GbE connectivity for short-range ultra-high-speed networking applications up to 1 meter. Ideal for AI/HPC clusters, enterprise networking, hyperscale data centers, and high-bandwidth Ethernet environments requiring ultra-low latency copper interconnect connectivity.
Built to QSFP-DD MSA standards, it features QSFP-DD to QSFP-DD 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 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-QD-QD-400G-1M.
- Reliable 400GbE Connectivity: Supports stable ultra-high-speed 400GbE networking for switches, servers, and storage environments.
- Low-Latency Passive Copper Design: Passive 30AWG Twinax construction minimizes latency and power consumption.
- Optimized for Data Centers: Ideal for spine-leaf architectures, AI fabrics, and high-throughput Ethernet deployments.
- Reliable Short-Range Connectivity: Supports stable 400GbE transmission up to 1 meter.
- Enhanced EMI Design: Designed to minimize electromagnetic interference in dense networking environments.
Technical Specifications
- Data Rate: 400GbE
- Cable Type: Passive DAC (Direct Attach Copper) Cable
- Connector Type: QSFP-DD to QSFP-DD
- Cable Length: 1 Meter
- Wire AWG: 30AWG Twinax
- Input Voltage: 3.3V
- Operating Temperature: 0°C to 70°C
- Standards Compliance: QSFP-DD MSA compliant
- Compatibility: 400GbE compliant
Compatibility
Programmed for compatibility with Arista networking platforms requiring Arista P/N CAB-QD-QD-400G-1M, including:
- Arista 7800 Series switches
- Enterprise Ethernet networks
- AI and HPC cluster environments
- Spine-leaf switching deployments
- Hyperscale and cloud data center environments
- MSA-compliant networking platforms
Requires compatible QSFP-DD ports on connected devices.
Need different cable lengths, compatible DAC/AOC options, or bulk quotes? Contact us—we specialize in high-performance networking solutions for AI, HPC, and data center environments.
Frequently Asked Questions
Do both ends need QSFP-DD ports?
Yes. This cable has a QSFP-DD connector on each end, so both switches need 400G QSFP-DD ports. It will not fit OSFP ports.
DAC or 400G optics: which should I use?
For runs of a meter or two inside a rack, the passive DAC is far cheaper and draws almost no power. For longer runs use 400G optics with fiber.
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
QSFP-200G-SR4 Arista Compatible, 200G QSFP56 SR4 Transceiver
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Quick answer: The CAB-QD-QD-400G-1M Arista-compatible cable is a 1-meter passive 400G QSFP-DD to QSFP-DD direct-attach copper (DAC) cable (400GBASE-CR8) for switch-to-switch links in the same rack. It is coded to work in Arista switches that call for CAB-QD-QD-400G-1M. Resilient Tec sells it new, with a lifetime warranty and free US shipping from Knoxville, TN.
Arista Compatible 400G QSFP-DD Passive DAC Cable - 1 Meter
This third-party 400G QSFP-DD Passive DAC cable is fully compatible with Arista CAB-QD-QD-400G-1M, delivering reliable 400GbE connectivity for short-range ultra-high-speed networking applications up to 1 meter. Ideal for AI/HPC clusters, enterprise networking, hyperscale data centers, and high-bandwidth Ethernet environments requiring ultra-low latency copper interconnect connectivity.
Built to QSFP-DD MSA standards, it features QSFP-DD to QSFP-DD 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 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-QD-QD-400G-1M.
- Reliable 400GbE Connectivity: Supports stable ultra-high-speed 400GbE networking for switches, servers, and storage environments.
- Low-Latency Passive Copper Design: Passive 30AWG Twinax construction minimizes latency and power consumption.
- Optimized for Data Centers: Ideal for spine-leaf architectures, AI fabrics, and high-throughput Ethernet deployments.
- Reliable Short-Range Connectivity: Supports stable 400GbE transmission up to 1 meter.
- Enhanced EMI Design: Designed to minimize electromagnetic interference in dense networking environments.
Technical Specifications
- Data Rate: 400GbE
- Cable Type: Passive DAC (Direct Attach Copper) Cable
- Connector Type: QSFP-DD to QSFP-DD
- Cable Length: 1 Meter
- Wire AWG: 30AWG Twinax
- Input Voltage: 3.3V
- Operating Temperature: 0°C to 70°C
- Standards Compliance: QSFP-DD MSA compliant
- Compatibility: 400GbE compliant
Compatibility
Programmed for compatibility with Arista networking platforms requiring Arista P/N CAB-QD-QD-400G-1M, including:
- Arista 7800 Series switches
- Enterprise Ethernet networks
- AI and HPC cluster environments
- Spine-leaf switching deployments
- Hyperscale and cloud data center environments
- MSA-compliant networking platforms
Requires compatible QSFP-DD ports on connected devices.
Need different cable lengths, compatible DAC/AOC options, or bulk quotes? Contact us—we specialize in high-performance networking solutions for AI, HPC, and data center environments.
Frequently Asked Questions
Do both ends need QSFP-DD ports?
Yes. This cable has a QSFP-DD connector on each end, so both switches need 400G QSFP-DD ports. It will not fit OSFP ports.
DAC or 400G optics: which should I use?
For runs of a meter or two inside a rack, the passive DAC is far cheaper and draws almost no power. For longer runs use 400G optics with fiber.
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
QSFP-200G-SR4 Arista Compatible, 200G QSFP56 SR4 Transceiver
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