User Manual Introduction

NVIDIA Innova-2 Flex Open Adapter Card

Provided below are the ordering part number, port speed, number of ports, and PCI Express speed for the two card models detailed in this document.

Mellanox Innova-2 Flex 25G MNV303212A-ADLT Open Adapter Card

Ordering Part Number (OPN)


Data Transmission Rate

25Gb/s Ethernet

Network Connector Types

Dual-port SFP28

PCI Express (PCIe) SerDes Speed

PCIe 3.0/4.0 x8 16GT/s



Adapter IC Part Number

ConnectX-5: MT27808A0-FCCF
FPGA: XCKU15P-FFVE1517-2-i

Device ID (decimal)


Mellanox Innova-2 Flex VPI MNV303611A-EDLT Open Adapter Card

Ordering Part Number (OPN)


Data Transmission Rate

QDR/EDR and 40/100GbE

Network Connector Types

Dual-port QSFP InfiniBand and Ethernet

PCI Express (PCIe) SerDes Speed

PCIe 3.0/4.0 x8 16GT/s



Adapter IC Part Number

ConnectX-5: MT27808A0-FCCF
FPGA: XCKU15P-FFVE1517-2-1

Device ID (decimal)


For more detailed information see the Specifications section.

MNV303612A-ADLT Adapter Card Block Diagram


MNV303611A-EDLT Adapter Card Block Diagram


Mellanox Innova-2 Flex Open Features a



PCI Express (PCIe)

  • PCIe Gen 4.0, 3.0, 1.1 and 2.0 compatible

  • 2.5, 5.0, or 8.0GT/s link rate x8

  • Auto-negotiates to x8, x4, x2, or x1 PCIe Atomic

  • TLP (Transaction Layer Packet) Processing Hints (TPH)

  • Access Control Service (ACS) for peer-to-peer secure communication

  • Advance Error Reporting (AER)

  • Process Address Space ID (PASID) Address Translation Services (ATS)

  • Support for MSI/MSI-X mechanisms


Mellanox adapters comply with the following IEEE 802.3* standards:

  • 25GbE / 10GbE

  • IEEE 802.3bj, 802.3bm 25 Gigabit Ethernet

  • IEEE 802.3by, Ethernet Consortium 25 Gigabit

  • IEEE Std 802.3ae 10 Gigabit Ethernet

  • IEEE Std 802.3ad, Link Aggregation

  • IEEE Std 802.1Q, 1P VLAN tags and priority

  • IEEE Std 802.1Qau Congestion Notification

  • IEEE Std 802.1Qbg

  • IEEE P802.1Qaz D0.2 ETS

  • IEEE P802.1Qbb D1.0 Priority-based Flow Control

  • IEEE 1588v2

  • Jumbo frame support (9600B)


  • Up to 25Gb/s Ethernet for MNV303212A-ADLT

  • Up to 100Gb/s Ethernet for MNV303611A-EDLT


8GB DDR4-2400 (in MNV303212A-ADLT only)

RDMA and RDMA over Converged Ethernet (RoCE)

The Mellanox Innova-2 Flex Open adapter card supports RoCE specifications delivering low-latency and high-performance over Ethernet networks. Leveraging data center bridging (DCB) capabilities as well as Mellanox Innova-2 Flex Open adapter advanced congestion control hardware mechanisms, RoCE provides efficient low-latency RDMA services over Layer 2 and Layer 3 networks.

Mellanox PeerDirect®

Mellanox PeerDirect communication provides high efficiency RDMA access by eliminating unnecessary internal data copies between components on the PCIe bus (for example, from FPGA to network peer), and therefore significantly reduces application run time. The Mellanox Innova-2 Flex Open adapter advanced acceleration technology enables higher cluster efficiency and scalability to tens of thousands of nodes.

CPU offload

Adapter functionality enabling reduced CPU overhead allowing more available CPU for computation tasks.

Quality of Service (QoS)

Support for port-based Quality of Service enabling various application requirements for latency and SLA.

Hardware-based I/O Virtualization

Mellanox Innova-2 Flex Open adapter SR-IOV technology provides dedicated adapter resources and guaranteed isolation and protection for virtual machines (VMs) within the server. I/O virtualization with Mellanox Innova-2 Flex Open adapter gives data center administrators better server utilization while reducing cost, power, and cable complexity, allowing more Virtual Machines and more tenants on the same hardware.

a. This section describes hardware features and capabilities. Please refer to the driver release notes for feature availability. See Mellanox Related Documents.

Mellanox Innova-2 Flex Open Benefits



Open Platform for Custom-made Logic Accelerations

Mellanox Innova-2 Flex Open card holds a Xilinx KU15P FPGA with 520K LUTs, 70Mb of internal RAM and 1970 DSP blocks. It is a powerful tool that allows users to implement top-of-the-line acceleration engines. MNV303212A-ADLT is packed with on-board 8MB DDR4@2400MHz and connected with x8 PCIe gen4 to the host, delivering over 100Gb/s of throughput, the FPGA is primed to deliver top-notch performance and meet the most demanding offload tasks.

Single PCIe Slot for Advanced Network Adapter and Custom Acceleration

Mellanox Innova-2 Flex Open packs Mellanox state of the art ConnectX-5 network adapter ASIC with Xilinx KU15P FPGA in one convenient HHHL adapter card, thus obviating the necessity for two separate cards for networking and offload. This frees up PCI slots for other applications, as well as saving on power.

Ease of Deployment

Mellanox Innova-2 Flex Open is fully compatible with software running on other Mellanox ConnectX-5 adaptersa, and therefore allows a seamless transition from your current adapter to the Flex Open adapter.


Customers can integrate their proprietary security application logic and utilize both the card's FPGA offload capabilities and advanced network features to achieve highly optimized and unique solutions. Custom hardware encryption accelerators and Mellanox Innova-2 Flex Open modular board architecture can be combined to serve a variety of security use cases, including network-distributed Denial-of Service (DDoS) protection, software encryption and more.


Mellanox Innova-2 Flex Open offers the ability to accelerate and scale different types of storage applications. For example, it can help deliver transparent data compression, decompression or de-duplication capabilities, improving overall storage utilization while not adding any additional load on the CPU.

HPC and Machine Learning

Mellanox Innova-2 Flex Open helps to address the main challenges of HPC and Machine Learning by enabling higher speed and lower latency interconnect, and by performing customer-specific in-network compute. Mellanox Innova-2 Flex Open delivers the ability to program customer-specific in-network compute logic on top of Mellanox Innova-2 Flex Open accelerations, which include Tag Matching, RDMA and GPUDirect® with rCUDA. Communication latency can be reduced by an order of magnitude, and Machine Learning inference and training stages can be greatly accelerated by offloading specific computational elements to Mellanox Innova-2 Flex Open.

Innova-2 Flex Open for Media & Entertainment

Mellanox Innova-2 Flex Open adapters deliver a unique, compliant and differentiated solution for streaming applications through custom accelerations. Using Mellanox Innova-2 Flex Open, multimedia application gain both scalability, by being able to handle multiple 4K/8K streams in a single host, and efficiency, with lower CPU and PCIe bandwidth utilization. Video applications can leverage Mellanox Innova-2 Flex Open further with:

  • Packet pacing, natively offloaded by the ConnectX-5 within Mellanox Innova 2 Flex Open, which can be further customized through FPGA logic

  • Video compression for multi-viewers applications

  • Seamless Protection switch to implement video redundancy

a. For specific driver availability, please refer to the Software Release Notes.

Operating Systems/Distributions

  • RHEL

  • Ubuntu

  • SLES

For version information, please refer to the Mellanox Innova-2 Flex Open Bundle Release Notes.
Please refer to Vivado release notes for supported Operating Systems.

Connectivity (Cables/Switches)

  • Interoperable with Ethernet switches (up to 25GbE for MNV303212A-ADLT and 100GbE for MNV303611A-EDLT)

  • Passive copper cable with ESD protection

  • Powered connectors for optical and active cable support


The Mellanox Innova-2 Flex Open adapter connects to a system through a standard x8 PCIe slot.
The FPGA relies on the ConnectX-5 embedded PCIe switch to connect through the PCIe fabric.

© Copyright 2023, NVIDIA. Last updated on May 22, 2023.