Arista Networks CAB-O-O-400G Compatible 400G OSFP 8 x 50G PAM4 IHS/Finned Top Passive Copper Twinax Cable

This Arista Networks CAB-O-O-400G compatible DAC cable provides 400G connectivity through a OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top) interface. It is a passive copper twinax connection without separate optical modules or fiber patch cords. The series configurations covered on this page are 1m (3ft), 2m (7ft), 2.5m (8ft) and 3m (10ft).

Series Part Number: CAB-O-O-400GHT Part Number: CAB-O-O-400G

Product Highlights

• HT-manufactured compatible alternative for Arista Networks CAB-O-O-400G
• 400G aggregate connectivity at 400Gbps
• Interface configuration: OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top)
• Passive DAC / Copper
• Length configurations covered: 1m (3ft), 2m (7ft), 2.5m (8ft) and 3m (10ft)
• Conductor specification: 30AWG
• Power consumption: 0.1W Per End

• CAB-O-O-400G-1M
• CAB-O-O-400G-2M
• CAB-O-O-400G-2.5M
• CAB-O-O-400G-3M

Passive DAC assemblies are normally used for short switch-to-switch, switch-to-server and rack-adjacent links. They draw very little power and avoid separate optical components, but the selected length must remain within the host and cable specification.

The OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top) interface and 400G data rate must match the equipment at both ends. For breakout versions, confirm the lane mapping and the speed of every downstream port; matching connector shapes alone does not establish interoperability.

The assembly is configured for equipment that recognizes the CAB-O-O-400G series. Before shipment, we check connector identification, link establishment and electrical link stability, signal integrity and diagnostic readouts. Host hardware and firmware revisions can affect third-party cable acceptance, so customers can provide the switch, server or accelerator model and software release for a pre-order compatibility review.

When ordering, specify CAB-O-O-400G, the host platform and one of the covered configurations: 1m (3ft). If your purchase documentation uses any of the listed OEM part numbers, include that identifier as well so our team can verify the intended version before production.

Every DAC assembly undergoes continuity and link testing, compatibility verification and a visual inspection of both connector ends. Cables are coiled without exceeding their minimum bend radius, fitted with connector protection and packed in anti-static bags or protective trays before cartoning. Project labels and packing lists are available for volume orders.

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.