Arista Networks CAB-O-O-400G-3M Compatible 400G OSFP 8 x 50G PAM4 IHS/Finned Top Passive Copper Twinax Cable, 3m (10ft)

This 3m (10ft) DAC cable is built for Arista Networks equipment requiring the CAB-O-O-400G-3M interface. The 400Gbps link uses OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top) and is supplied as one complete tested assembly.

OEM Part Number: CAB-O-O-400G-3MHT Part Number: CAB-O-O-400G-3M

Product Highlights

• Compatible alternative to Arista Networks CAB-O-O-400G-3M
• 400G connectivity at 400Gbps
• Interface configuration: OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top)
• Fixed length and part number: 3m (10ft), CAB-O-O-400G-3M
• Cable construction: Passive DAC
• Conductor specification: 28AWG
• Maximum power consumption: 0.1W Per End
• Minimum bend radius: 40.5mm

The listed modulation format is 8x 50G-PAM4. Both host interfaces must be configured for the same aggregate rate and lane arrangement. A connector that fits mechanically does not by itself guarantee that the remote port supports this encoding or breakout mode.

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.

At 3m (10ft), this assembly can bridge non-aligned ports or adjacent racks while remaining a single direct-attach link. Support longer horizontal runs with suitable cable management and preserve space for cooling and future maintenance.

CAB-O-O-400G-3M is the longest of 4 verified length options in this family. Compared with CAB-O-O-400G-2.5M at 2.5m (8ft), it provides 0.5m of additional reach for a longer vertical drop, a wider rack or an adjacent-cabinet route. Confirm that the complete path requires this length, because unused slack still needs supported, bend-safe storage.

The rated power consumption is 0.1W 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.

This assembly uses 28AWG conductors, PVC jacket, minimum bend radius 40.5mm. 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 OSFP MSA, IEEE 802.3cd 100GBase-CR2, CMIS 4.0. Confirm that the host firmware and port configuration support the same operating mode.

The assembly is configured for equipment that recognizes CAB-O-O-400G-3M. Before shipment, we inspect both connectors and verify identification, link establishment and electrical continuity, link stability and diagnostic readouts. Host hardware and firmware revisions can affect third-party cable acceptance, so customers can provide the equipment model and software release for a pre-order compatibility review.

When ordering, specify CAB-O-O-400G-3M, cable length 3m (10ft) and the host platform. This allows our team to verify both the physical assembly and the compatibility requirement before production. Neutral labeling and customer packing lists can be arranged for volume orders.

HT inspects and tests every completed cable before it enters finished stock. Protective caps or covers are fitted where applicable, followed by anti-static or tray packaging and an outer carton. Custom labels can cross-reference the customer part number, CAB-O-O-400G-3M and the 3m (10ft) length for easier inventory control.

Lead time for ordinary configurations is normally one to three working days, while production quantities are confirmed with the order. We can arrange express courier or economy freight according to destination and carton volume, or hand the shipment to your appointed logistics provider.