Lenovo 3M HDR-2XHDR100 Splitter OPT CBL - 4Z57A72561

Lenovo 4Z57A72561 Splitter Cable

Overview

The Lenovo 4Z57A72561 is a 3-meter optical splitter cable designed to break out a single Mellanox HDR InfiniBand port into two HDR100 ports. This cable is crucial for environments requiring high-density, high-speed interconnects, such as advanced data centers, high-performance computing clusters, and AI/ML workloads where maximizing port utilization is critical. It enables a single switch port to connect to two separate devices or network segments, effectively doubling connectivity from one source.

Compatibility

This optical splitter cable is specifically designed for Mellanox HDR InfiniBand infrastructure. It is compatible with Mellanox ConnectX-6 Dx adapters (MCX623106AS-CDAT, MCX623436AN-CDAB) and other QSFP56 ports that support HDR100 signaling. It is intended for use with Lenovo ThinkSystem servers and networking equipment that utilize these high-speed interconnects, such as the SR950 (Xeon Gen 1) when equipped with compatible network adapters.

Installation Notes

When installing the 4Z57A72561, ensure the QSFP56 connectors are handled with care to avoid dust or damage. Connect the single QSFP56 end to the host port (e.g., switch or adapter) and the two QSFP56 ends to the target devices or network segments. Verify that both target devices support HDR100 signaling for optimal performance. The cable construction is optical, requiring clean connections and avoiding sharp bends that could exceed the minimum bend radius, though specific bend radius data is not provided.