• Silver-colored arista 400g osfp dac cable sfp+ transceiver modules with blue handles and metallic connectors 3m
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Arista

Arista CAB-O-O-400G-3M | 400G OSFP DAC Cable, 400GBASE-CR8, Passive Twinax, 3m

Arista CAB-O-O-400G-3M | 400G OSFP DAC Cable, 400GBASE-CR8, Passive Twinax, 3m

CAB-O-O-400G-3M

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Description

The Arista CAB-O-O-400G-3M is a passive 400GBASE-CR8 Direct Attach Copper (DAC) cable delivering 400 Gbps connectivity between OSFP-equipped switches and servers in data centre environments. Utilising 8 x 50Gbps PAM-4 electrical lanes across a 3-metre passive twinax copper link, it provides near-zero latency and ultra-low power consumption — making it the preferred choice for high-density rack-to-rack and top-of-rack interconnects where cost efficiency and performance are critical.

Compatible with Arista EOS 4.23.0 and later, this cable integrates seamlessly into Arista's 400G switching portfolio and supports both point-to-point and breakout configurations on compatible platforms. With hot-swap capability and IEEE 802.3cd compliance, it delivers the reliability and simplicity that enterprise and hyperscale data centre teams demand. Upgrade your network with gear from iptrading.com.au — Australia's IT hardware specialists.

Features

- Passive DAC design eliminates active components for near-zero latency and minimal power draw
- OSFP connectors on both ends for compatibility with Arista's 400G switching platforms
- 8 x 50Gbps PAM-4 electrical lanes deliver full 400G aggregate bandwidth
- Hot-swappable for zero-downtime servicing and flexible data centre operations
- Complies with IEEE 802.3cd (400GBASE-CR8) industry standard
- Supports 400G point-to-point and breakout configurations on compatible Arista platforms
- Ideal for short-range rack-to-rack and top-of-rack switch-to-server connectivity
- Integrates with Arista EOS 4.23.0 and later for full platform support
- Part of Arista's comprehensive 400G OSFP optics and cable portfolio

Warranty

Arista hardware products come with a 1-year limited hardware warranty, covering defects in materials and workmanship under normal use.
Extended Warranty Options:
IP Trading offers tailored extended warranty solutions and support packages for Arista products. Contact our team to explore options that align with your organisation's needs.
https://www.arista.com/assets/data/pdf/Warranty.pdf

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

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Technical Specifications

FAQs

Datasheet

Technical Specifications

- Part Number: CAB-O-O-400G-3M
- Interface Standard: 400GBASE-CR8 (IEEE 802.3cd)
- Form Factor: OSFP to OSFP (Octal Small Form-factor Pluggable)
- Cable Type: Passive Twinax Copper (DAC)
- Data Rate: 400 Gbps aggregate
- Electrical Lanes: 8 x 50Gbps PAM-4
- Cable Length: 3 metres (9.8 ft)
- Maximum Reach: Up to 3m (passive copper)
- Minimum EOS Version: 4.23.0
- Hot-Swappable: Yes
- Power: Passive — no active electronics
- Available Family Lengths: 1m, 2m, 3m (CAB-O-O-400G-xM)
- Warranty: 1 Year Limited Hardware Warranty

FAQs

Q: What switches and platforms is the CAB-O-O-400G-3M compatible with?
A: The CAB-O-O-400G-3M is compatible with Arista switches featuring OSFP ports and running Arista EOS 4.23.0 or later. This includes Arista's 400G-capable data centre switching platforms. Always verify compatibility with your specific platform model and EOS version before deployment.

Q: Is this cable active or passive, and what does that mean for performance?
A: This is a passive DAC (Direct Attach Copper) cable, meaning it contains no active electronics. Passive DACs deliver near-zero latency, consume very little power, and are highly reliable — making them the cost-effective choice for short-range 400G interconnects within and between racks.

Q: What is the maximum distance supported by this cable?
A: The CAB-O-O-400G-3M supports links up to 3 metres. For longer reaches, Arista offers active optical cables (AOC) or optical transceivers. For shorter runs, the 1m and 2m variants (CAB-O-O-400G-1M and CAB-O-O-400G-2M) are also available.

Q: Can this cable be used in breakout configurations?
A: Yes, on compatible Arista platforms this cable supports breakout configurations in addition to standard 400G point-to-point links. Refer to your Arista platform documentation and EOS configuration guide to confirm supported breakout modes.

Q: Can I purchase the Arista CAB-O-O-400G-3M in Australia from IP Trading?
A: Yes. IP Trading (iptrading.com.au) is an Australian B2B IT hardware specialist stocking Arista optics and DAC cables. Contact our team for pricing, availability, and volume pricing for data centre refresh projects across Australia.

Q: What warranty does this Arista DAC cable carry?
A: The CAB-O-O-400G-3M comes with a 1 Year Limited Hardware Warranty covering parts, repair, or replacement with a 10 business day turnaround. Optional Next Business Day and 4-hour Advance Hardware Replacement support upgrades are also available.

Datasheet

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