Arista

Arista CAB-D-8S-400G-2.5 | 400G breakout 8x50G | passive DAC twinax | 400GBASE-CR8 / 50GBASE-CR | copper (no wavelength) | 2.5m | QSFP-DD to 8x SFP56

Arista CAB-D-8S-400G-2.5 | 400G breakout 8x50G | passive DAC twinax | 400GBASE-CR8 / 50GBASE-CR | copper (no wavelength) | 2.5m | QSFP-DD to 8x SFP56

SKU:CAB-D-8S-400G-2.5

Regular price $0.00 AUD
Regular price
$0.00 AUD
$0.00 AUD
Regular price
Sale Sold out
Shipping calculated at checkout.

Description

400G passive twinax DAC breakout cable for short‑reach connectivity, fanning a QSFP‑DD port into eight 50G lanes. Ideal for dense TOR and spine deployments where low latency and low cost per link are critical. Requires host/peer support for 8×50G breakout and matching cable coding.

Features

- 8×50G breakout from a single QSFP‑DD 400G port
- Cost‑efficient, power‑free short‑reach connectivity
- High signal integrity over 2.5 m passive copper
- Standards‑aligned 400GBASE‑CR8 / 50GBASE‑CR
- Tool‑less, hot‑swappable deployment
- Ideal for TOR and leaf‑spine fabrics

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.

View full details
  • You may also like
  • Best sellers
  • Similar products

specs-tabs

Collapsible content

FAQs

Technical Specifications

FAQs

Q: Does this require special configuration on the switch?
A: Yes. The QSFP‑DD port must be put into 8×50G breakout mode and support the cable’s coding profile.

Q: Is it suitable for inter‑rack links?
A: At 2.5 meters it is best for intra‑rack or adjacent rack links; verify your physical path length.

Q: Are the legs individually addressable?
A: Yes. Each SFP56 leg presents as an independent 50G port.

Q: Any optical components?
A: No. It is a copper DAC with no optics or wavelength.

Technical Specifications

- Aggregate speed: 400G (breakout to 8×50G)
- Lane rate/encoding: 50G PAM4 per lane
- Form factor ends: QSFP‑DD to 8× SFP56
- Cable type: Passive twinax DAC (copper)
- Standards: 400GBASE‑CR8, 50GBASE‑CR; IEEE 802.3 compliant
- Reach: 2.5 meters
- Power: 0 W (passive), ultra‑low latency
- Use case: QSFP‑DD 400G port breaking out to 8× 50G switch/server NIC ports

Recently Viewed

  • Request for a Quote

    Looking for competitive pricing? Submit a request, and our team will provide a tailored quote that fits your needs.

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Call us Now  
  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Contact us