Mellanox MCX4121A-ACAT ConnectX-4 Lx EN 25 GbE Dual-port SFP28 PCIe3.0 x8 LP Adapter (FC EKAU)

Learn about the specifications and operating system requirements for the feature code (FC) EKAU adapter.

Overview

The Mellanox MCX4121A-ACAT ConnectX-4 Lx EN 25 GbE Dual-port SFP28 PCIe3.0 x8 LP Adapter is a PCI Express (PCIe) generation 3 (Gen3) x8 adapter. The adapter can be used in either a x8 or x16 PCIe slot in the system. The adapter provides a combination of 1, 10, 25, 40, and 50 GbE bandwidth, sub-microsecond latency and a 75 million packets per second message rate. It includes native hardware support for remote direct memory access (RDMA) over converged Ethernet (RoCE), Ethernet stateless offload engines, overlay networks, and GPUDirect® Technology.

Figure 1. Mellanox MCX4121A-ACAT ConnectX-4 Lx EN 25 GbE Dual-port SFP28 PCIe3.0 x8 LP Adapter
Mellanox MCX4121A-ACAT ConnectX-4 Lx EN 25 GbE Dual-port SFP28 PCIe3.0 x8 LP Adapter

Specifications

Item
Description
Adapter FRU number
01EM688 (AOC-MCX4121A-ACAT-IB001)
I/O bus architecture
PCIe3 x8
Slot requirement
For more information about slot priorities, maximums, and placement rules, see the PCIe adapter placement rules for the 9006-12P or PCIe adapter placement rules for the 9006-22P
Voltage
3.3 V, 12 V.
Form factor
Short, with full-height tailstock
Attributes provided
Low latency RDMA over converged Ethernet
Connectivity to up-to 4 independent hosts
Hardware-based I/O virtualization
Transceivers and cables
Mellanox LinkX 10 Gb/s, 25 Gb/s, 40 Gb/s, 50 Gb/s and 100 Gb/s Direct Attach Copper cables (DACs), Copper Splitter cables, Active Optical Cables (AOCs) and Transceivers. For information regarding Mellanox LinkX cables and Transceivers, see LinkX™ InfiniBand Direct Attach Copper Cables.

Operating system or partition requirements

If you are installing a new feature, ensure that you have the software that is required to support the new feature and that you determine whether any prerequisites must be met for this feature and attaching devices. To check for operating system and partition requirements, see one of the following links:
Important: For a list of known Linux operating system issues that can affect this adapter, see the IBM Power LC readme.