• Arista 200G QSFP-DD to 4x QSFP28 DAC breakout cable, 2m black silver
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Arista

Arista CAB-D-4Q-200G-2M | 200G QSFP-DD to 4x 50G QSFP DAC Breakout Cable, 2m

CAB-D-4Q-200G-2M

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Description

This Arista passive twinax copper breakout cable connects a single 200G QSFP-DD port to four 50G QSFP ports over a 2 metre run. It suits short-reach top-of-rack and in-rack breakout links in data centre networks, where a pre-terminated copper cable avoids the need for separate optics and fibre.

The QSFP-DD end carries 200GBASE-CR8 over 8 x 25G NRZ electrical lanes, which split into four 50GBASE-CR2 legs, each using 2 x 25G NRZ lanes on a QSFP connector. As a passive DAC it needs no external power and no licence or subscription. The 2 metre length is the variant that distinguishes this SKU from the 1 m and 2.5 m cables in the same family.

The QSFP-DD port must be configured for 200G using 8 x 25G NRZ electrical lanes, which also allows interoperation with legacy 100G QSFP and 25G SFP ports. Arista EOS 4.23.0 or later is required.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Passive copper breakout connects one 200G QSFP-DD port to four 50G QSFP ports
- Pre-terminated cable removes the need for separate optics and fibre
- Interoperates with legacy 100G QSFP and 25G SFP ports when the port is set to 200G using 8 x 25G NRZ lanes
- No external power or licence required
- Supported from EOS 4.23.0

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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specs-tabs

Technical Specifications

FAQs

Technical Specifications

- Part number: CAB-D-4Q-200G-2M
- PHY type: 200GBASE-CR8 to 4x 50GBASE-CR2
- Connector type: QSFP-DD to 4x QSFP
- Cable type: Passive twinax copper (DAC)
- Cable length: 2 m
- Electrical lanes: 8 x 25G NRZ on the QSFP-DD end
- Electrical lanes per leg: 2 x 25G NRZ on each QSFP leg
- Port configuration: QSFP-DD port set to 200G using 8 x 25G NRZ lanes
- Minimum EOS version: 4.23.0
- Operating case temperature: 0 to 70 C
- Storage temperature: -40 to 70 C
- Relative humidity: 5 to 95%
- Operating altitude: 0 to 10,000 ft
- Standards: IEEE 802.3, QSFP-DD MSA, SFF-8449, SFF-8636

FAQs

Q: Does this cable need a licence or subscription?
A: No. It is a passive copper cable, so no licence or subscription is required.

Q: How does the QSFP-DD port need to be configured?
A: The QSFP-DD port must be set to 200G using 8 x 25G NRZ electrical lanes. This also allows interoperation with legacy 100G QSFP and 25G SFP ports.

Q: Which EOS version does it need?
A: Arista EOS 4.23.0 or later.

Q: Does it need external power?
A: No. It is a passive twinax copper DAC with no external power requirement.

Q: How does this differ from the other cables in the family?
A: This SKU is the 2 metre length. The same family is also offered in 1 m and 2.5 m lengths.

Q: What is the OSFP equivalent?
A: The OSFP equivalent is CAB-O-4Q-200G-xM, offered in 1, 2 and 3 m lengths.

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