Arista

Arista CAB-Q-S-2M | QSFP+→4xSFP+ DAC | 40G→4x10G | 40GBASE-CR4/10GBASE-CR | 2m | Twinax | Breakout

Arista CAB-Q-S-2M | QSFP+→4xSFP+ DAC | 40G→4x10G | 40GBASE-CR4/10GBASE-CR | 2m | Twinax | Breakout

SKU:CAB-Q-S-2M

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Description

High-performance QSFP+ to 4x SFP+ direct-attach copper breakout for short, low-latency 40G-to-4x10G links in TOR/leaf-spine and server access. Plug-and-play design—no separate optics required.

Features

- Breakout 40G to four independent 10G links from a single QSFP+ port
- No separate optics or patch cords required—simplifies cabling
- Low power and ultra-low latency passive copper design
- Robust latching connectors for secure data center installs
- MSA-compliant for broad multi-vendor interoperability

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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FAQs

Technical Specifications

FAQs

Q: Does this cable require separate transceivers?
A: No. It is an integrated QSFP+ to 4x SFP+ DAC assembly—just plug into the ports.

Q: Will it work with my switch/NIC?
A: It is MSA-compliant, but your hardware must support QSFP+ breakout (40G→4x10G) and DAC cables. Check your device’s compatibility list and breakout support.

Q: Is this cable passive or active?
A: This 2m model is a passive twinax DAC for short, low-latency links.

Q: What use cases fit this cable?
A: Top-of-rack to servers with SFP+ ports, leaf-to-aggregation breakout, or lab setups needing short 10G fan-out from a 40G port.

Technical Specifications

- Interface/form: QSFP+ to 4x SFP+ breakout (1x40G → 4x10G)
- Data rate: 40GbE aggregate; 4x 10GbE lanes
- Standards: IEEE 802.3ba (40G), IEEE 802.3ae (10G); MSA SFF-8436 (QSFP+), SFF-8431 (SFP+)
- Cable type: Direct-Attach Copper (DAC), twinax, passive
- Length/reach: 2 meters
- Connector ends: QSFP+ plug ↔ 4x SFP+ plugs
- Wavelength: n/a (copper)
- Typical power: <0.1 W per end
- Latency: ultra-low, line-rate
- Operating temperature: 0°C to 70°C
- Compliance: RoHS

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