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

Overview

The Mellanox MCX4121A-ACAT ConnectX-4 Lx EN 25GbE dual-port SFP28 PCIe3.0 x8 LP 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 GPU Direct® Technology.

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

Specifications

Item

Description

Adapter FRU number

01EM688 (AOC-MCX4121A-ACAT-IB001) (Designed to comply with RoHS requirement)

I/O bus architecture

PCIe3 x8

Slot requirement

For details about slot priorities and placement rules, see PCIe adapter placement rules and slot priorities and select the system you are working on.

Supported Systems

POWER8® processor-based systems

• 8001-12C and 8001-22C

Voltage

12 V

Form factor

Short, with full-height tailstock

Maximum number

For details about the maximum number of adapters that are supported, see PCIe adapter placement rules and slot priorities and select the system you are working on.

Attributes provided

Low latency RDMA over Converged Ethernet

Connectivity to up-to 4 independent hosts

Hardware-based I/O virtualization

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 the prerequisites, see IBM® Prerequisite website.