The chapter contains the following sections:
These are the release notes for the NVIDIA® ConnectX®-6 Lx adapters firmware. This firmware supports the following protocols:
Ethernet - 1GbE, 10GbE, 25GbE, 50GbE
PCI Express 4.0, supporting backwards compatibility for v3.0, v2.0 and v1.1
1. Speed that supports both NRZ and PAM4 modes in Force mode and Auto-Negotiation mode.
When connecting an NVIDIA-to-NVIDIA adapter card in ETH PAM4 speeds, Auto-Neg should always be enabled.
This firmware supports the devices and protocols listed below:
| NVIDIA SKU | Legacy OPN | PSID | Device Name |
| 900-9X662-0053-ST1 | MCX631102AN-ADA | MT_0000000531 | ConnectX-6 Lx EN adapter card; 25GbE ; Dual-port SFP28; PCIe 4.0 x8; No Crypto |
| 900-9X662-0083-ST0 | MCX631102AC-ADA | MT_0000000532 | ConnectX-6 Lx EN adapter card; 25GbE ; Dual-port SFP28; PCIe 4.0 x8; Crypto and Secure Boot |
| 900-9X662-0063-ST0 | MCX631102AE-ADAT | MT_0000000545 | ConnectX-6 Lx EN adapter card; 25GbE; Dual-port SFP28; PCIe 4.0 x8; Crypto; No Secure Boot |
| 900-9X625-0053-SB0 | MCX631432AN-ADA | MT_0000000546 | ConnectX-6 Lx EN adapter card; 25GbE OCP3.0; With Host management ; Dual-port SFP28; PCIe 4.0 x8; No Crypto; Thumbscrew (Pull Tab) Bracket |
| 900-9X625-0083-SB0 | MCX631432AC-ADA | MT_0000000547 | ConnectX-6 Lx EN adapter card; 25GbE OCP3.0; With Host management ; Dual-port SFP28; PCIe 4.0 x8; Crypto and Secure Boot; Thumbscrew (Pull Tab) Bracket |
| 900-9X659-0015-SB1 | MCX631435AN-GDAB | MT_0000000548 | ConnectX-6 Lx EN adapter card; 50GbE; OCP3.0; With Host management ; Single-port QSFP28; PCIe 4.0 x8; No Crypto; Thumbscrew (Pull Tab) Bracket |
| 900-9X659-0045-SB0 | MCX631435AC-GDAB | MT_0000000549 | ConnectX-6 Lx EN adapter card; 50GbE; OCP3.0; With Host management ; Single-port QSFP28; PCIe 4.0 x8; Crypto and Secure Boot; Thumbscrew (Pull Tab) Bracket |
| 900-9X659-0025-SB0 | MCX631435AE-GDAB | MT_0000000550 | ConnectX-6 Lx EN adapter card; 50GbE; OCP3.0; With Host management ; Single-port QSFP28; PCIe 4.0 x8; Crypto; No Secure Boot; Thumbscrew (Pull Tab) Bracket |
| 900-9X625-0073-SB1 | MCX631432AS-ADA | MT_0000000551 | ConnectX-6 Lx EN adapter card; 25GbE OCP3.0; With Host management ; Dual-port SFP28; PCIe 4.0 x8; Secure Boot; No Crypto; Internal Lock Bracket |
| 900-9X625-0063-SB0 | MCX631432AE-ADAB | MT_0000000552 | ConnectX-6 Lx EN adapter card; 25GbE OCP3.0; With Host management ; Dual-port SFP28; PCIe 4.0 x8; Crypto; No Secure Boot; Thumbscrew (Pull Tab) Bracket |
| 900-9X662-0073-ST0 | MCX631102AS-ADA | MT_0000000575 | ConnectX-6 Lx EN adapter card; 25GbE; Dual-port SFP28; PCIe 4.0 x8; Secure Boot; No Crypto; |
| 900-9X601-0025-ST0 | MCX631105AE-GDAT | MT_0000000587 | ConnectX-6 Lx EN adapter card; 50GbE ; Single-port QSFP28; PCIe 4.0 x8; Crypto; No Secure Boot; Tall Bracket |
| 900-9X601-0015-SQ0 | MCX631105AN-GDAT | MT_0000000589 | ConnectX-6 Lx EN adapter card; 50GbE ; Single-port QSFP28; PCIe 4.0 x8; No Crypto; Tall Bracket |
| 900-9X601-0045-ST0 | MCX631105AC-GDAT | MT_0000000590 | ConnectX-6 Lx EN adapter card; 50GbE ; Single-port QSFP28; PCIe 4.0 x8; Crypto and Secure Boot; Tall Bracket |
The following are the drivers’ software, tools, switch/HCA firmware versions tested that you can upgrade from or downgrade to when using this firmware version:
| Supported Version | |
| ConnectX-6 Lx Firmware | 26.41.1000 / 26.40.1000 / 26.39.2048 |
| MLNX_OFED | 24.04-0.6.6.0 / 24.01-0.3.3.1 / 23.10-1.1.9.0 Note: For the list of the supported Operating Systems, please refer to the driver’s Release Notes. |
| MLNX_EN (MLNX_OFED based code) | 24.04-0.6.6.0 / 24.01-0.3.3.1 / 23.10-1.1.9.0 Note: For the list of the supported Operating Systems, please refer to the driver’s Release Notes. |
| WinOF-2 | 24.4.50000 / 24.1.50000 / 23.10.50000 Note: For the list of the supported Operating Systems, please refer to the driver’s Release Notes. |
| MFT | 4.28.0-92 / 4.27.0 / 4.26.1 Note: For the list of the supported Operating Systems, please refer to the driver’s Release Notes. |
| mstflint | 4.28.0-92 / 4.27.0 / 4.26.1 Note: For the list of the supported Operating Systems, please refer to the driver’s Release Notes. |
| FlexBoot | 3.7.400 |
| UEFI | 14.34.12 |
| Cumulus | 5.4 onwards |