• Silver-colored arista H-D400-4Q100-1M sfp+ transceiver modules with blue handles and metallic connectors for 400g active DAC
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Arista

Arista CAB-Q-S-0-5M-Arista | 40G QSFP+ to 4x 10G SFP+ Breakout DAC Cable, 0.5m

CAB-Q-S-0-5M-Arista

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Description

The Arista CAB-Q-S-0-5M is a passive direct attach copper breakout cable designed for cost-effective 40G to 10G connectivity in data centers and enterprise networks. This 0.5-meter twinax cable features a QSFP+ connector on one end and four SFP+ connectors on the other, enabling seamless connection between 40G and 10G equipment within close-range racks. Ideal for top-of-rack switching and adjacent rack interconnections.

Features

Passive copper twinax construction for reliable, low-latency connectivity
- QSFP+ to 4x SFP+ breakout design enables flexible 40G to 10G migration
- MSA compliant to SFF-8436 and SFF-8431 standards ensuring broad interoperability
- Low power consumption design with no external power required
- Commercial temperature range operation (0°C to 70°C)
- Supports 40G Ethernet (40GBASE-CR4) and 4x 10G Ethernet (10GBASE-CU)
- Compatible with InfiniBand SDR/DDR/QDR applications
- Cost-effective alternative to optical transceivers for short-range connections
- Pre-programmed EEPROM for seamless plug-and-play installation
- RoHS and CE certified for environmental and safety compliance

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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Technical Specifications

FAQs

Technical Specifications

Cable Type: Passive Direct Attach Copper (DAC) Breakout
- Connector Type: 1x QSFP+ to 4x SFP+
- Cable Length: 0.5 meters (50 cm)
- Data Rate: 40Gbps aggregate (40GBASE-CR4 to 4x 10GBASE-CU)
- Cable Gauge: 30AWG twinax copper
- Power Consumption: Maximum 0.5W
- Operating Temperature: 0°C to 70°C (commercial grade)
- Compliance: QSFP+ MSA SFF-8436, SFF-8431, InfiniBand SDR/DDR/QDR
- Certifications: CE, RoHS compliant
- Supply Voltage: 3.3V

FAQs

Q: What is the typical use case for the CAB-Q-S-0-5M breakout cable?
A: This cable is ideal for connecting a 40G QSFP+ switch port to four separate 10G SFP+ devices, commonly used in top-of-rack switching scenarios, adjacent rack connections, and cost-effective 40G to 10G breakout applications within data centers.

Q: Is this cable compatible with non-Arista network equipment?
A: Yes, the CAB-Q-S-0-5M follows MSA standards and is designed to be compatible with any switch or device that supports standard QSFP+ and SFP+ interfaces, including equipment from Cisco, Juniper, Dell, and other major vendors.

Q: What is the maximum distance supported by this passive DAC cable?
A: As a passive copper cable, the CAB-Q-S-0-5M is designed for short-reach connections of 0.5 meters. For longer distances, active optical cables or fiber optic transceivers would be required.

Q: Does this cable require external power to operate?
A: No, this is a passive copper cable that draws minimal power (maximum 0.5W) directly from the connected ports. No external power supply is required, making it a low-power and cost-effective interconnect solution.

Q: Can this cable support different data rates besides 40G/10G?
A: Yes, the cable chipset supports data rates ranging from 10.31Gbps to 41.25Gbps, allowing flexibility for various Ethernet and InfiniBand applications depending on the connected port configuration.

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