Arista Networks CAB-Q56-Q56 Compatible 200G QSFP56 4 x 50G PAM4 Passive Copper Twinax Cable
A 200G direct-attached link depends on the correct host identity, interface mode and physical length. This page covers the Arista Networks CAB-Q56-Q56 compatible DAC series in QSFP56 to QSFP56, including 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft) and 3m (10ft). Each documented length-specific OEM reference is linked separately where an individual product page is available.
Series Part Number: CAB-Q56-Q56HT Part Number: CAB-Q56-Q56
Product Highlights
- HT-manufactured compatible alternative for Arista Networks CAB-Q56-Q56
- 200G aggregate connectivity at 200Gbps
- Interface configuration: QSFP56 to QSFP56
- Passive Twinax / Copper
- Length configurations covered: 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft) and 3m (10ft)
- Conductor specification: 30AWG
- Power consumption: 0.03W Per End
- Operating temperature: 0 to 70°C (32 to 158°F)
Available Lengths and Corresponding Part Numbers
The documented configurations are 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft) and 3m (10ft). Each link below opens the separate product page for that physical length and its corresponding OEM part number. Select the exact assembly required by the route and purchase order; custom project lengths can be discussed separately.
Compatible OEM Part Numbers
- CAB-Q56-Q56-0.5M
- CAB-Q56-Q56-1M
- CAB-Q56-Q56-1.5M
- CAB-Q56-Q56-2M
- CAB-Q56-Q56-3M
Specifications
| Arista Compatible | CAB-Q56-Q56-2M |
|---|---|
| Manufacturer | HT |
| HT Part Number | CAB-Q56-Q56 |
| Form Factor | QSFP56 to QSFP56 |
| Max. Data Rate | 200Gbps |
| Media | Copper |
| Cable Type | Passive Twinax |
| Cable Length Options Covered | 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft) and 3m (10ft) |
| Wire AWG | 30AWG |
| Minimum Bend Radius | 39mm |
| Max. Power Consumption | 0.03W Per End |
| Jacket Material | PVC |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | IEEE802.3cd, SFF-8436 |
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 series, keep the interface rate, DAC construction and length-specific OEM reference together throughout that review.
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. Series-level inspection is followed by the exact length and OEM configuration selected for dispatch. Functional verification includes link establishment and diagnostic indications where the host exposes them.
Applications and Deployment
Passive twinax cables are commonly selected for short switch-to-switch, switch-to-server and accelerator connections within or between nearby racks. With no separate optical conversion stage, they offer a simple low-power physical link. The assembly must nevertheless remain within the length, signaling rate and qualification limits accepted by both hosts. For this series, the listed interface is QSFP56 to QSFP56 and the aggregate rate is 200G.
Cable Construction and Routing
For this assembly, the conductor specification is 30AWG; the jacket material is PVC; the minimum bend radius is 39mm; the operating temperature is 0 to 70°C (32 to 158°F); the power consumption is 0.03W Per End. These parameters belong in the installation review rather than being treated as catalogue trivia. Route the cable through its intended managers without tension, avoid pressure close to the connector boots and leave enough space to operate the latches. Any service loop must respect the stated bend limit.
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. For this series, follow the corresponding length link, quote that exact OEM part number and keep different lengths on separate order lines. HT part number CAB-Q56-Q56 identifies the product family; the linked page provides the final length-specific identity.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are 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. Both connector ends are inspected as part of the complete assembly, and protective packing is selected to avoid tight bends during transport and storage.
Frequently Asked Questions
Is this an original Arista Networks cable?
No. It is an HT-manufactured compatible cable for equipment that specifies CAB-Q56-Q56, not an original Arista Networks-branded product.
Are different lengths and OEM part numbers separate products?
Yes. Where a length has its own OEM reference, follow the corresponding link above and order that exact part number on its own line. Do not substitute another length only because the connector arrangement is the same.
Does this DAC cable require separate modules at each end?
No. The connector ends and cable form one complete direct-attach assembly. The ends are not detachable standalone transceivers, and the complete product is tested together.
What information helps confirm compatibility?
Provide the equipment manufacturer and model, port type, hardware revision and software release, together with the required OEM reference, length and quantity. Breakout projects should also identify the intended lane configuration.
