Arista

Arista CAB-D-4Q-200G-2.5 | 200G DAC breakout | QSFP-DD to 4x QSFP28 | 200GBASE-CR8 / 50GBASE-CR2 | Copper (no wavelength) | 2.5m reach | Passive twinax

SKU:CAB-D-4Q-200G-2.5

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Description

Versatile passive DAC breakout to distribute one 200G port into four 50G links. QSFP-DD host end to four QSFP28 50G CR2 connectors, ideal for short- to very-short-reach top-of-rack wiring. Direct-attach copper minimizes latency and cost while simplifying operations.

Features

- 2.5m reach for flexible in-rack and adjacent-rack wiring
- Economical, power-free alternative to optical solutions
- Reliable, low-latency direct-attach copper design
- Standards-aligned 200G/50G CR breakout
- Rapid deployment with no transceivers needed

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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FAQs

Technical Specifications

FAQs

Q: What platforms can use this breakout?
A: Any switch or NIC with a QSFP-DD port that supports 200G→4x50G CR breakout.

Q: Is there a wavelength specified?
A: No. This is copper; there is no optical wavelength.

Q: How does length impact performance?
A: Passive copper links are intended for short reaches; ensure the chosen length meets insertion loss budgets for your platform.

Q: Does it require vendor-specific coding?
A: Some vendors enforce coding; consult your platform documentation.

Q: Is special tooling required to install?
A: No tools required; insert the QSFP-DD and QSFP28 ends into their respective ports.

Technical Specifications

- Aggregate speed: 200Gbps (breakout to 4x 50Gbps)
- Host interface: QSFP-DD, 8 lanes
- Remote interfaces: 4x QSFP28 50G (CR2, 2 lanes each)
- Ethernet standards: 200GBASE-CR8 and 50GBASE-CR2
- Cable type: Passive twinax, direct-attach copper
- Reach/length: 2.5 meters
- Latency: Near-zero (no optical conversion)
- Power: No external power; passive cable
- Use case: Break a 200G port into four 50G switch or NIC ports
- Compliance: MSA-compatible coding; device must support 200G→4x50G breakout

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