Arista Networks CAB-O-O-400G-2.5M Compatible 400G OSFP 8 x 50G PAM4 IHS/Finned Top Passive Copper Twinax Cable, 2.5m (8ft)

With a fixed 2.5m (8ft) cable and OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top), the CAB-O-O-400G-2.5M compatible assembly simplifies 400G deployment. It is manufactured and tested by HT for Arista Networks equipment.

OEM Part Number: CAB-O-O-400G-2.5MHT Part Number: CAB-O-O-400G-2.5M

Product Highlights

• Compatible alternative to Arista Networks CAB-O-O-400G-2.5M
• 400G connectivity at 400Gbps
• Interface configuration: OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top)
• Fixed length and part number: 2.5m (8ft), CAB-O-O-400G-2.5M
• 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.

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.

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.

The 2.5m (8ft) version is useful when a two-metre run would leave insufficient working slack. Before installation, check the complete horizontal and vertical path so that CAB-O-O-400G-2.5M reaches both ports without tension at either connector.

CAB-O-O-400G-2.5M occupies the middle of this family between CAB-O-O-400G-2M at 2m (7ft) and CAB-O-O-400G-3M at 3m (10ft). It adds 0.5m over the shorter option for extra routing clearance, while the next longer version adds another 0.5m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.

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.

Each CAB-O-O-400G-2.5M compatible cable is powered up on a suitable test interface rather than checked only for continuity. We confirm the expected identification and observe electrical continuity, link stability and diagnostic readouts. Because operating systems can apply different qualification rules by hardware revision, the intended Arista Networks platform should be included with the order.

Use part number CAB-O-O-400G-2.5M for the 2.5m (8ft) 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.

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-2.5M and the 2.5m (8ft) length for easier inventory control.

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.