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Arista

Arista CAB-O-2Q-400G-1M | 400G OSFP to 2x 200G QSFP DAC Breakout Cable, 1m

Arista CAB-O-2Q-400G-1M | 400G OSFP to 2x 200G QSFP DAC Breakout Cable, 1m

CAB-O-2Q-400G-1M

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Description

The CAB-O-2Q-400G-1M is a 400G passive Direct Attach Copper (DAC) breakout cable designed for high-density data centre and high-performance computing environments. Featuring an OSFP connector on one end and two QSFP connectors on the other, it enables a single 400GBASE-CR8 port to break out into two independent 200GBASE-CR4 connections. Built on 8 x 50G PAM-4 electrical lanes, this passive twinax cable delivers reliable, low-latency interconnects without active components — minimising power consumption and heat in dense spine-leaf architectures.

Natively compatible with Arista EOS (minimum version 4.23.0) and Arista CloudVision, the cable offers plug-and-play operation across supported Arista platforms with zero additional configuration. Hot-swappable for maximum uptime, it is part of Arista's comprehensive 1G–400G copper and optical connectivity portfolio. Also available in 2M and 3M lengths. Order direct from iptrading.com.au — Australian-owned and operated since 2001.

Features

- Passive DAC design — no active components, ultra-low power consumption
- Breaks out a single 400G OSFP port into 2x independent 200GBASE-CR4 QSFP connections
- 8 x 50G PAM-4 electrical lanes for high-speed, low-latency data transfer
- Plug-and-play integration with Arista EOS and CloudVision management
- Hot-swappable for minimal downtime and simplified servicing
- Compliant with industry open standards for broad interoperability
- Ideal for high-density data centre spine-leaf and HPC interconnects
- Part of Arista's full portfolio spanning 1G to 400G copper and optical connectivity

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-2Q-400G-1M
- Cable Type: Passive Twinax Direct Attach Copper (DAC)
- Speed: 400GBASE-CR8 (OSFP end) to 2 x 200GBASE-CR4 (QSFP ends)
- Form Factor: OSFP to 2 x QSFP breakout
- Electrical Interface: 8 x 50G PAM-4 lanes (4 x 50G PAM-4 per QSFP end)
- Cable Length: 1 metre
- Available Lengths: 1M, 2M, 3M (CAB-O-2Q-400G-xM)
- Minimum EOS Version: 4.23.0
- Active/Passive: Passive (no active components)

FAQs

Q: What does the CAB-O-2Q-400G-1M do?
A: It is a 400G passive DAC breakout cable that connects a single OSFP port (400GBASE-CR8) to two separate QSFP ports (2 x 200GBASE-CR4), effectively splitting one 400G connection into two independent 200G links over a 1-metre twinax copper cable.

Q: Which Arista switches and platforms are compatible with this cable?
A: This cable is compatible with Arista platforms running EOS version 4.23.0 or later that feature OSFP and QSFP port configurations. It integrates natively with Arista EOS and CloudVision for plug-and-play operation. Contact IP Trading to confirm compatibility with your specific Arista hardware.

Q: Is this an active or passive cable?
A: It is a passive Direct Attach Copper (DAC) cable, meaning it contains no active electronic components. This results in lower power consumption and heat generation compared to active optical cables, making it ideal for dense data centre deployments.

Q: What lengths is this cable available in?
A: The OSFP to 2x QSFP breakout DAC cable is available in 1M, 2M, and 3M lengths under part numbers CAB-O-2Q-400G-1M, CAB-O-2Q-400G-2M, and CAB-O-2Q-400G-3M respectively.

Q: Can I purchase this Arista DAC cable in Australia from IP Trading?
A: Yes. iptrading.com.au is an Australian-owned and operated IT hardware reseller established in 2001. You can order the CAB-O-2Q-400G-1M directly through our website or contact our team for volume pricing, compatibility advice, and fast local fulfilment.

Q: What is the typical use case for this breakout cable?
A: This cable is ideal for high-density data centre spine-leaf architectures and high-performance computing (HPC) environments where 400G OSFP uplink ports need to be distributed across multiple 200G QSFP-connected devices, maximising port utilisation and reducing cabling complexity.

Datasheet

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