Arista Networks CAB-Q56-Q56-2M Compatible 200G QSFP56 4 x 50G PAM4 Passive Copper Twinax Cable, 2m (7ft)

Use the CAB-Q56-Q56-2M compatible assembly where a 200G connection is required between compatible ports. This page covers the 2m (7ft) version only, with its own HT part number, specifications and compatibility verification.

OEM Part Number: CAB-Q56-Q56-2MHT Part Number: CAB-Q56-Q56-2M

Product Highlights

• Compatible alternative to Arista Networks CAB-Q56-Q56-2M
• 200G connectivity at 200Gbps
• Interface configuration: QSFP56 to QSFP56
• Fixed length and part number: 2m (7ft), CAB-Q56-Q56-2M
• Cable construction: Passive Twinax
• Conductor specification: 30AWG
• Maximum power consumption: 0.03W Per End
• Minimum bend radius: 39mm

The rated power consumption is 0.03W Per End. Include this load in the host-port power and thermal budget, especially in densely populated switches. Maintain front-panel clearance and do not bundle the cable so tightly that it obstructs airflow around the connectors.

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.

CAB-Q56-Q56-2M provides 2m (7ft) for connections between separated rack units or nearby equipment positions. Plan the route around cable managers and power cords, keeping the assembly free from connector strain while avoiding a large obstruction in the airflow path.

CAB-Q56-Q56-2M occupies the middle of this family between CAB-Q56-Q56-1.5M at 1.5m (5ft) and CAB-Q56-Q56-3M at 3m (10ft). It adds 0.5m 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.

This assembly uses 30AWG conductors, PVC jacket, minimum bend radius 39mm. 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.

The intended application is determined by the host interface and protocol support. Listed interface and protocol references include IEEE802.3cd, SFF-8436. Confirm that the host firmware and port configuration support the same operating mode.

Compatibility is more than matching the QSFP56 to QSFP56 shape. This assembly is prepared for hosts expecting CAB-Q56-Q56-2M and is checked for identification, stable link behavior and electrical continuity, link stability and diagnostic readouts. We recommend confirming the equipment model and software release for critical deployments or mixed-vendor installations.

Use part number CAB-Q56-Q56-2M for the 2m (7ft) assembly. For mixed-length projects, list each required part number and quantity separately so that every cable can be tested and packed according to its intended installation.

Quality control includes connector appearance, cable identification and functional verification. Packing materials are selected to keep the connector housings and cable boots from taking impact during transport, and the coil is not compressed into an undersized bundle. Volume orders can include customer-specific labels and packing documentation.

Standard configurations normally ship within one to three working days. Worldwide courier, air freight and sea freight options are available, and shipments can also be sent on your own courier account or delivered to an appointed forwarder.