Arista Networks QSFP-400G-PC Compatible 400G QSFP112 4 x 100G PAM4 Passive Copper Twinax Cable

The QSFP-400G-PC compatible cable series is intended for Arista Networks equipment requiring a 400G DAC connection. Its direct-attach configuration supports a passive copper twinax connection without separate optical modules or fiber patch cords, while the verified source lengths listed below make length selection explicit.

Series Part Number: QSFP-400G-PCHT Part Number: QSFP-400G-PC

Product Highlights

• HT-manufactured compatible alternative for Arista Networks QSFP-400G-PC
• 400G aggregate connectivity at 400Gbps
• Passive Twinax
• Length configurations covered: 1.5m (5ft)
• Conductor specification: 26AWG
• Power consumption: 0.1W Per End

This series page covers the following verified source length configurations: 1.5m (5ft). Each documented length-specific OEM reference is treated as its own product configuration; follow the corresponding product link where available. Select the required length when requesting a quotation; custom project lengths are available for discussion.

• QSFP-400G-PC015

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 the stated connector configuration interface and 400G data rate must match the equipment at both ends. The source application is listed as 400G Ethernet. 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 QSFP-400G-PC 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.

This series is ordered by the base HT part number QSFP-400G-PC plus length and compatibility requirement. Available source configurations documented on this page are 1.5m (5ft); other project lengths can be discussed with the factory, and each length-specific OEM reference is reviewed under its own product configuration.

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.