Arista Networks CAB-S-S-25G-4M Compatible 25G SFP28 Passive Copper Twinax Cable, 4m (13ft)
This CAB-S-S-25G-4M compatible cable gives project teams a defined 25G connection in 4m (13ft), with SFP28 to SFP28 and Arista Networks host compatibility. Rather than treating all lengths as interchangeable, the page keeps this order code separate and links the other verified lengths for accurate schedules, labels and delivery checks.
OEM Part Number: CAB-S-S-25G-4MHT Part Number: CAB-S-S-25G-4M
Product Highlights
- Compatible alternative to Arista Networks CAB-S-S-25G-4M
- 25G connectivity at 25Gbps
- Interface configuration: SFP28 to SFP28
- Fixed length and part number: 4m (13ft), CAB-S-S-25G-4M
- Conductor specification: 26AWG
- Minimum bend radius: 28mm
Specifications
| HT Part Number | CAB-S-S-25G-4M |
|---|---|
| Arista Networks Compatible | CAB-S-S-25G-4M |
| Manufacturer | HT |
| Connector Type | SFP28 to SFP28 |
| Max Data Rate | 25Gbps |
| Minimum Bend Radius | 28mm |
| Wire AWG | 26AWG |
| Cable Length | 4m (13.12ft) |
| Jacket Material | PVC (OFNR) |
| Typical Power Consumption | ≤0.5W |
| Power Supply | 3.3V |
| Temperature | 0 to 70°C (32 to 158°F) |
| Protocols | IEEE 802.3, SFP28 MSA, SFF-8402, Infiniband, EIA 364-1000 |
| Application | 25G Ethernet, Data Center, 5G Wireless |
Cable Construction and Routing
This assembly uses 26AWG conductors, PVC (OFNR) jacket, minimum bend radius 28mm. These mechanical characteristics affect how the cable should be dressed behind the equipment. Avoid sharp edges, excessive ties and repeated tight bends close to the connector boots.
Network and Protocol Considerations
The intended application is 25G Ethernet, Data Center, 5G Wireless. Listed interface and protocol references include IEEE 802.3, SFP28 MSA, SFF-8402, Infiniband, EIA 364-1000. Confirm that the host firmware and port configuration support the same operating mode.
Passive Copper Operation
A passive DAC has no separate optical conversion stage. Its low-power, low-latency operation is useful for short equipment links, but the assembly must remain within the length and signaling mode accepted by both hosts.
Length Selection and Installation Planning
The 4m (13ft) length gives CAB-S-S-25G-4M more freedom for adjacent-rack and row-end deployments. Longer copper runs need particular attention to routing weight and bend control; the DAC specification and host support must still match the intended link.
Position Within the Length Range
CAB-S-S-25G-4M occupies the middle of this family between CAB-S-S-25G-3M at 3m (10ft) and CAB-S-S-25G-5M at 5m (16ft). It adds 1m over the shorter option for extra routing clearance, while the next longer version adds another 1m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.
Project Documentation and Cable Identification
Large deployments are easier to audit when the order code, physical length and endpoint record agree. Keep the OEM reference in the compatibility document and use the HT part number on the packing list. Where several lengths arrive together, labels and carton groups can be arranged by rack or port plan so installers do not have to identify cables by appearance alone. For this assembly, the listed conductor specification is 26AWG; the minimum bend radius is 28mm; the jacket material is PVC (OFNR).
Arista Networks Compatibility and Factory Testing
Factory verification links the compatibility identity to the exact physical assembly described on this page. Identification, connector condition and live link behavior are checked before packing. Customers can submit equipment and firmware details with the project documentation for a more specific pre-order compatibility review. Both connectors are examined before the operating test, which includes link stability and diagnostic indications.
Frequently Asked Questions
Is this an original Arista Networks cable?
No. It is an HT-manufactured compatible alternative for equipment that specifies Arista Networks CAB-S-S-25G-4M.
Does this order code cover multiple lengths?
No. CAB-S-S-25G-4M refers here to 4m (13ft). Every other verified length has a separate part number and page in the length list.
Are separate transceivers or patch leads required?
No. This is one complete direct-attach assembly. The ends are not detachable modules and should not be separated from the cable.
Can excess cable be folded into a compact bundle?
No. Use a supported, bend-safe service loop and observe the listed minimum bend radius. Do not crease the cable or tighten ties around the connector boots.
Ordering Information
Use the listed HT part number for ordering and retain the OEM reference as the host-compatibility cross-reference. Send quantities by length, along with any rack-based packing or label instructions. If the project has mixed equipment, include the host model for each group rather than relying only on the aggregate cable rate. Quantity and any labeling instructions should be attached specifically to CAB-S-S-25G-4M.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, while production quantities are confirmed with the order. International express, air cargo and sea freight can be selected according to destination and carton volume; customer courier accounts and nominated forwarders are also accepted.
Quality Assurance and Packaging
Inspection and link testing are completed before the cable enters its protective packaging. Project orders can be packed and labelled by length, rack or customer reference, with packing documentation that makes received quantities straightforward to reconcile against the installation schedule. Neutral packaging and customer-specific packing documentation are available on request.
