Arista

Arista CAB-O-4Q-400G-3M | 400G CR8→4x100G CR2 | OSFP to 4x QSFP56 | 400GBASE-CR8/100GBASE-CR2 | Passive Copper DAC | 3 m

Arista CAB-O-4Q-400G-3M | 400G CR8→4x100G CR2 | OSFP to 4x QSFP56 | 400GBASE-CR8/100GBASE-CR2 | Passive Copper DAC | 3 m

SKU:CAB-O-4Q-400G-3M

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Description

High-performance passive twinax breakout DAC for top-of-rack and leaf-spine deployments. Connect one 400G OSFP port to four 100G QSFP ports using CR8→CR2 electrical lanes for ultra-low latency and power-free operation. Ideal where short-reach, high-density copper connectivity is preferred.

Features

- 400G to 4×100G breakout for high-density aggregation
- Ultra-low latency and zero power consumption
- Robust twinax construction for reliable short-reach links
- Standards-based CR8/CR2 electrical interface
- Simplifies cabling versus multiple discrete links
- Hot-pluggable OSFP/QSFP form factors

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 ports does this cable connect?
A: One 400G OSFP port that supports CR8 breakout to four 100G QSFP56 ports that support CR2.

Q: Is this cable passive or active?
A: Passive DAC; no optics or external power required.

Q: What is the maximum reach?
A: 3 meters; the link budget equals the cable length for passive DAC.

Q: Does it require special configuration?
A: Devices must support 400G→4×100G breakout (CR8 to CR2) on the OSFP port.

Q: Is it compatible across vendors?
A: Compatibility depends on device acceptance of DAC coding and support for CR breakout modes.

Technical Specifications

- Type: Passive twinax copper DAC breakout
- Aggregate rate: 400GbE host → 4 × 100GbE legs
- Standards: 400GBASE-CR8, 100GBASE-CR2 (IEEE 802.3)
- Host connector: OSFP (CR8)
- Remote connectors: 4 × QSFP56 (CR2)
- Cable length: 3 m
- Breakout mapping: 8-lane host (CR8) to 4 × 2-lane legs (CR2)
- Power: 0 W (no optics, passive)
- Medium: Shielded twinax copper
- Typical use: TOR/leaf-spine short-reach interconnects supporting breakout mode

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