Arista

Arista CAB-O-4Q-400G-1M | 400G→4x100G DAC | OSFP to 4x QSFP56 | 400GBASE-CR8 / 4x100GBASE-CR2 | Passive Copper (no wavelength) | 1 m

Arista CAB-O-4Q-400G-1M | 400G→4x100G DAC | OSFP to 4x QSFP56 | 400GBASE-CR8 / 4x100GBASE-CR2 | Passive Copper (no wavelength) | 1 m

SKU:CAB-O-4Q-400G-1M

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Description

Ultra-dense passive breakout DAC that converts a single 400G OSFP port into four independent 100G copper links. Optimized for top-of-rack and spine/leaf breakouts with minimal latency and no optics required, up to 1 meter.

Features

- High-density 400G to 4x100G breakout
- Zero-power, ultra-low latency passive copper
- Cost-effective alternative to optical transceivers
- Standards-based CR interoperability
- Ideal for leaf/spine and TOR aggregation
- Plug-and-play deployment

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: Is this an active or passive breakout cable?
A: It is a passive direct-attach copper cable; no active components or optics are required.

Q: Which QSFP type is used on the 100G legs?
A: The 100G legs are QSFP56 for 100GBASE-CR2 electrical lanes; check platform support for 100G CR2 DACs.

Q: Will this work across different vendor platforms?
A: It follows Ethernet CR standards. Some devices may require specific EEPROM coding—verify support with your hardware documentation.

Q: Any special configuration needed?
A: No cable configuration is needed. Enable 400G→4x100G breakout on the switch if required and use platform-recommended FEC settings.

Technical Specifications

- Cable type: Passive DAC twinax copper
- Aggregate speed: 400G; breakout: 4x 100G
- Host connector: OSFP (400G)
- Remote connectors: 4x QSFP56 (100G each, CR2)
- Ethernet base standards: 400GBASE-CR8 and 100GBASE-CR2
- Length: 1 m
- Reach: up to 1 m (short-reach, in-rack)
- Lane mapping: 8 lanes to 4x 2 lanes breakout
- Power consumption: 0 W (passive)
- Use case: 400G switch port to four 100G switch/NIC ports

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