• Arista CAB-D-4Q-400-2.5 400G QSFP-DD to 4x100G QSFP DAC breakout cable 2.5m
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Arista

Arista CAB-D-4Q-400G-2M | 400G QSFP-DD to 4x 100G QSFP DAC Cable, 2 m

CAB-D-4Q-400G-2M

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Description

This Arista passive twinax copper breakout cable connects a single 400G QSFP-DD port to four 100G QSFP ports using 400GBASE-CR8 to 4x 100GBASE-CR2 signalling. It suits data-centre leaf and spine deployments where a 400G switch port needs to fan out to four 100G server, NIC or switch ports over a short link.

At 2 m long, it covers connections within a rack or to an adjacent rack. The cable is passive twinax copper with a QSFP-DD connector on the 400G end and four QSFP connectors on the 100G end. It needs no separate power supply, requires no licence or subscription, and the modules are hot swappable. The operating case temperature range is 0 to 70 C.

The 400G port uses 8 x 50G PAM4 electrical lanes, and the port must support 100GBASE-CR2 breakout, which depends on the Arista platform and EOS release. For OSFP-based ports, Arista lists the related CAB-O-4Q-400G passive breakout cables.

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

Features

- Hot swappable to maximise uptime and simplify serviceability
- Passive twinax copper construction for short-reach, low-cost 400G to 4x 100G breakout
- Single QSFP-DD 400G port fans out to four 100G QSFP ports
- Flexibility of media and interface choice on a port-by-port basis
- Complies with industry standards
- Australia RCM certified

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

- Product number: CAB-D-4Q-400G-2M
- PHY type: 400GBASE-CR8 to 4x 100GBASE-CR2
- Cable type: Passive twinax copper
- Length: 2 m
- Connectors: 1x QSFP-DD to 4x QSFP (100G)
- QSFP-DD module dimensions (H x W x D): 13.5 x 18.4 x 78.3 mm (Type 1) / 13.5 x 18.4 x 93.3 mm (Type 2)
- QSFP module dimensions (H x W x D): 13.5 x 18.4 x 72.4 mm
- 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
- EMC: FCC Part 15 Subpart B Class A, ICES-003 Issue 7, EN 55032:2015, EN 55035:2017, EN 300 386 V2.1.1
- Safety: EN 62368-1:2014 + A11:2017, IEC 62368-1:2014
- Certifications: CE, KCC, RCM, UKCA
- Compliance: RoHS and WEEE directives

FAQs

Q: Does this cable need a licence or subscription?
A: No. It is a passive copper cable and requires no licence or subscription.

Q: Does it need external power?
A: No. It is a passive twinax copper cable with no separate power supply.

Q: What ports does it connect?
A: One end plugs into a 400G QSFP-DD port using 8 x 50G PAM4 electrical lanes. The other end splits into four QSFP connectors for 100G ports. The 400G port must support 100GBASE-CR2 breakout, which depends on the Arista platform and EOS release.

Q: Can I use it with OSFP-based ports?
A: This SKU has a QSFP-DD connector on the 400G end. For OSFP-based ports, Arista lists the related CAB-O-4Q-400G passive breakout cables.

Q: How far can this cable reach?
A: This SKU is 2 m long, which suits connections within a rack or to an adjacent rack. Other lengths in the family are 1, 2.5 and 3 m.

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