• Silver-colored sfp+ transceiver modules with blue handles and metallic connectors for arista 25g sfp28 passive dac cable
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Arista

Arista CAB-S-S-25G-1.5 | 25G SFP28 Passive DAC Twinax Cable, 1.5m, 25GBASE-CR

Arista CAB-S-S-25G-1.5 | 25G SFP28 Passive DAC Twinax Cable, 1.5m, 25GBASE-CR

CAB-S-S-25G-1.5

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Description

The Arista CAB-S-S-25G-1.5M is a 1.5-metre passive 25GBASE-CR SFP28 to SFP28 direct attach copper (DAC) twinax cable engineered for high-density data centre short-reach connectivity. Operating at 25.78 Gbps, this passive copper solution delivers ultra-low latency and minimal power draw — making it a cost-effective alternative to optical transceivers for top-of-rack, server-to-switch, and storage interconnect applications. Compliant with IEEE 802.3by and SFP28 MSA standards, it slots seamlessly into Arista 25G-capable switches and NICs.

Dual-rate support extends compatibility to 10G SFP+ ports, protecting your infrastructure investment across mixed-speed environments. EEPROM on each SFP28 connector enables automatic host system identification, and the hot-pluggable design simplifies installation in live environments. RoHS and CE compliant, the cable is also suited to InfiniBand and high-performance computing (HPC) deployments. Order today through iptrading.com.au — your local source for enterprise-grade networking solutions.

Features

- Passive copper design minimises power consumption and reduces infrastructure cost vs. optical alternatives
- Dual-rate support for 25G (25.78 Gbps) and 10G (10.31 Gbps) environments
- Backward compatible with SFP+ DAC ports for mixed-speed deployments
- Hot-pluggable SFP28 connectors for live installation and removal
- EEPROM on each end for automatic host system identification
- No FEC required — CA-N cable type per IEEE 802.3by for clean short-reach links
- Ultra-low latency compared to optical transceiver solutions
- Ideal for top-of-rack, server-to-switch, and storage interconnects
- Suitable for 25G Ethernet, InfiniBand, and HPC environments
- RoHS and CE compliant for global deployment

Warranty

Arista hardware products come with a 1-year limited hardware warranty, covering defects in materials and workmanship under normal use.
Extended Warranty Options:
IP Trading offers tailored extended warranty solutions and support packages for Arista products. Contact our team to explore options that align with your organisation's needs.
https://www.arista.com/assets/data/pdf/Warranty.pdf

All technical data should be verified on the manufacturer data sheets.

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specs-tabs

Technical Specifications

FAQs

Datasheet

Technical Specifications

- Form Factor: SFP28 to SFP28
- Cable Type: Passive Direct Attach Copper (DAC) Twinax
- Data Rate: 25.78 Gbps (25G Ethernet); backward compatible with 10G
- Cable Length: 1.5 metres (4.9 ft)
- Standards: IEEE 802.3by (25GBASE-CR), SFF-8402, SFF-8432 (SFP28 MSA)
- Connector: Hot-pluggable SFP28 20-pin footprint
- Wire Gauge: 30 AWG
- Power Consumption: Max 0.57W per end
- Supply Voltage: 3.3V
- Operating Temperature: 0°C to 70°C
- Minimum Bend Radius: 25mm
- Jacket Material: PVC (OFNR)
- EEPROM: Yes — host-readable product identification on each connector
- Compliance: RoHS, CE

FAQs

Q: What is the difference between a passive DAC cable and an active DAC cable?
A: A passive DAC cable like the CAB-S-S-25G-1.5M transmits signals without active signal conditioning electronics, making it lower cost and lower power. Passive DAC cables are ideal for very short reaches (typically up to 3–5 metres at 25G). Active DAC cables include signal boosting circuitry to support longer distances, at higher cost and power draw.

Q: Which Arista switches is this cable compatible with?
A: The CAB-S-S-25G-1.5M is designed for use with Arista 25G-capable platforms including the 7050CX3, 7060CX2, 7170, and 7280 series switches, as well as any SFP28-equipped NIC or storage device. Its dual-rate design also supports 10G SFP+ ports on compatible Arista and third-party equipment.

Q: Can this cable be used with non-Arista switches or servers?
A: Yes. The cable complies with IEEE 802.3by (25GBASE-CR) and SFP28 MSA standards, making it broadly compatible with SFP28 ports from Cisco, Juniper, Mellanox/NVIDIA, and other vendors. EEPROM identification supports vendor-specific host queries. Verify your platform's third-party DAC compatibility policy before deployment.

Q: Does this cable require Forward Error Correction (FEC)?
A: No. As a CA-N (copper attach, near-end) cable per IEEE 802.3by, this passive 1.5m cable operates without FEC at 25G, simplifying configuration and reducing latency overhead on supported platforms.

Q: Is this cable suitable for InfiniBand or HPC environments?
A: Yes. The SFP28 connector and 25.78 Gbps data rate make this cable compatible with 25G InfiniBand and high-performance computing interconnect architectures, in addition to standard 25G Ethernet data centre deployments.

Q: Can I purchase the Arista CAB-S-S-25G-1.5M in Australia through IP Trading?
A: Yes. IP Trading stocks Arista DAC cables including the CAB-S-S-25G-1.5M and ships Australia-wide. Visit iptrading.com.au or contact our team for volume pricing, compatibility advice, and fast local fulfilment.

Datasheet

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