ATTO Software Downloads

The following are current versions of ATTO drivers and software.

Click here for archived ATTO drivers and software. Drivers and software for discontinued ATTO products are here.

If a driver or software package does not appear on this list, it may still be available by contacting ATTO Tech Support.

The current sort appears below. SEARCH the sorted file listing using the search box (when each sort filter is set to “all”, all files are searched).

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Title
Celerity 8Gb Fibre Channel Multi-Path Director Driver macOS
Updated: July 7, 2026
Files in Package:
  • Driver Version (v3.38.1-MP) 2.12 MB
  • Product Release Notes 315.92 KB
 ATTO MultiPath Director is a proprietary driver that enables macOS hosts to connect to storage systems that support ALUA for failover, failback and load balancing across Fibre Channel ports.

Supports the following macOS Versions: macOS 26 Tahoe, macOS 15 Sequoia, macOS 14 Sonoma & macOS 13 Ventura.

In macOS 11, Apple introduced User-Approved Kernel Extension Loading. For additional information on this update, please visit here.

When installing an ATTO driver on macOS, you may get a pop-up message warning stating that “this is a system extension that will be incompatible with a future version of macOS.” There is no need to be concerned. ATTO currently uses Kernel Extension Drivers to provide the highest-performing drivers possible. 		Download
Celerity 8Gb Fibre Channel MultiPath Director Driver Linux
Updated: July 7, 2026
Files in Package:
  • Driver Version (v2.30.6-MP) 1.32 MB
  • Product Release Notes 284.78 KB
 ATTO MultiPath Director is a proprietary driver that enables Linux hosts to connect to storage systems that support ALUA for failover, failback and load balancing across Fibre Channel ports.

Supports the following Linux Distributions: Red Hat Enterprise Linux 8, 9  & 10, Rocky Linux 8, 9 & 10, openSUSE Leap 15 & 16, SUSE Linux Enterprise Server 15 & 16, Ubuntu 22.04 LTS & 24.04 LTS. 		Download
ConfigTool Linux
Updated: July 7, 2026
Files in Package:
  • ConfigTool version (v4.41) 25.19 MB
 The Legacy ATTO ConfigTool offers a graphical user interface to easily monitor and manage ATTO host bus adapter settings for specialized applications. It can be used to view the drivers and flash files currently in use, easily update the firmware, collect diagnostic logs and configure adapter settings.

ATTO ConfigTool requires a supported ATTO Product. The HBA drivers and firmware are not included with the utility. 		Download
ConfigTool LiveISO
Updated: June 22, 2026
Files in Package:
  • ConfigTool LiveISO Version (v260609) 1.2 GB
  • Product Release Notes 145.35 KB
 The ATTO ConfigTool LiveISO is a bootable system image used to update flash bundles and access diagnostic utilities when using open-source ATTO drivers, alongside more robust adapter management and monitoring tools. A full description is available in the Utilities Manual. Download
ConfigTool macOS
Updated: July 7, 2026
Files in Package:
  • ConfigTool version: (v4.41) 117.07 MB
  • Product Release Notes 342.42 KB
 The Legacy ATTO ConfigTool offers a graphical user interface to easily monitor and manage ATTO host bus adapter settings for specialized applications. It can be used to view the drivers and flash files currently in use, easily update the firmware, collect diagnostic logs and configure adapter settings.

ATTO ConfigTool requires a supported ATTO Product. The HBA drivers and firmware are not included with the utility. 		Download
ConfigTool Windows
Updated: July 7, 2026
Files in Package:
  • ConfigTool version: (v4.41)
 The Legacy ATTO ConfigTool offers a graphical user interface to easily monitor and manage ATTO host bus adapter settings for specialized applications. It can be used to view the drivers and flash files currently in use, easily update the firmware, collect diagnostic logs and configure adapter settings.

ATTO ConfigTool requires a supported ATTO Product. The HBA drivers and firmware are not included with the utility. 		Download
ExpressSAS 12Gb GT Driver FreeBSD
Updated: May 27, 2026
Files in Package:
  • Driver Version (v2.00.0) 1.28 MB
  • Product Release Notes 173.11 KB
 Proprietary FreeBSD device driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following FreeBSD versions: FreeBSD 13 & 14. 		Download
ExpressSAS 12Gb GT Driver illumos
Updated: May 27, 2026
Files in Package:
  • Driver Version (v2.00.0) 1.06 MB
  • Product Release Notes 131.69 KB
 Proprietary illumos device driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following illumos versions: OpenIndiana, OmniOS, NexentaStor 4, NexentaStor 5, NestOS. 		Download
ExpressSAS 12Gb GT Driver VMware
Updated: September 3, 2026
Files in Package:
  • Driver Version (v2.01.3) 483.36 KB
 VMware v9 Driver for ExpressSAS 12Gb GT Host Bus adapters.

Supported Products: ExpressSAS H1280GT, ExpressSAS H1208GT, ExpressSAS, H1244GT, ExpressSAS H12F0GT & ExpressSAS H120FGT. 		Download
ExpressSAS 12Gb GT Flash Bundle FreeBSD
Updated: May 27, 2026
Files in Package:
  • Flash Bundle Version (v260427) 6.88 MB
  • Product Release Notes 123.25 KB
 FreeBSD flash bundle for ExpressSAS 12Gb GT Host Bus Adapters.

Instructions on how to flash can be found in the ReadMe downloaded with the flash bundle file.

Supported Products: ExpressSAS H1280GT, ExpressSAS H1208GT, ExpressSAS, H1244GT, ExpressSAS H12F0GT & ExpressSAS H120FGT. 		Download
ExpressSAS 12Gb GT Flash Bundle illumos
Updated: May 27, 2026
Files in Package:
  • Flash Bundle Version (v260427) 12.32 MB
  • Product Release Notes 123.25 KB
 illumos flash bundle for ExpressSAS 12Gb GT Host Bus Adapters.

Instructions on how to flash can be found in the ReadMe downloaded with the flash bundle file.

Supported Products: ExpressSAS H1280GT, ExpressSAS H1208GT, ExpressSAS, H1244GT, ExpressSAS H12F0GT & ExpressSAS H120FGT. 		Download
ExpressSAS 12Gb GT Flash Bundle VMware
Updated: September 3, 2026
Files in Package:
  • Flash Bundle Version (v260427) 12.32 MB
  • Product Release Notes 123.25 KB
 VMware flash bundle for ExpressSAS 12Gb GT Host Bus adapters.

Instructions on how to flash can be found in the ReadMe downloaded with the flash bundle file.

Supported Products: ExpressSAS H1280GT, ExpressSAS H1208GT, ExpressSAS, H1244GT, ExpressSAS H12F0GT & ExpressSAS H120FGT. 		Download
ExpressSAS 24Gb Driver FreeBSD
Updated: June 22, 2026
Files in Package:
  • Driver Version (v1.03.1) 1.28 MB
  • Product Release Notes 147.15 KB
 Proprietary FreeBSD device driver for ExpressSAS 24Gb Host Bus Adapters.

Supports the following FreeBSD versions: FreeBSD 13 (minimum 13.1), FreeBSD 14 (minimum 14.0).

More information can be found in the ATTO ExpressSAS 24Gb SAS Adapter FreeBSD ReadMe file downloaded with the driver. 		Download
ExpressSAS 24Gb Driver illumos
Updated: June 22, 2026
Files in Package:
  • Driver Version (v1.02.6) 1.05 MB
  • Product Release Notes 156.25 KB
 Proprietary illumos device driver for ExpressSAS 24Gb Host Bus Adapters.

Supports the following illumos versions: OpenIndiana, OmniOS, NexentaStor 4, NexentaStor 5, NestOS.

More information can be found in the ATTO ExpressSAS 24Gb SAS Adapter illumos ReadMe file downloaded with the driver. 		Download
ExpressSAS 24Gb Flash Bundle FreeBSD
Updated: June 22, 2026
Files in Package:
  • Flash Bundle Version (v260526) 3.79 MB
  • Product Release Notes 110.13 KB
 FreeBSD flash bundle for ExpressSAS 24Gb Host Bus Adapters.

Instructions on how to flash can be found in the ReadMe downloaded with the flash bundle file.

Supported Products: ExpressSAS H24F0, ExpressSAS H240F & ExpressSAS H240N. 		Download
ExpressSAS 24Gb Flash Bundle illumos
Updated: June 22, 2026
Files in Package:
  • Flash Bundle Version (v260526) 10.8 MB
  • Product Release Notes 110.13 KB
 illumos flash bundle for ExpressSAS 24Gb Host Bus Adapters.

Instructions on how to flash can be found in the ReadMe downloaded with the flash bundle file.

Supported Products: ExpressSAS H24F0, ExpressSAS H240F & ExpressSAS H240N. 		Download
FastFrame 3 10/25/40/50/100GbE SmartNIC FreeBSD Driver
Updated: February 19, 2025
Files in Package:
  • Driver version (v3.4.2)
 ATTO recommends our customers use the latest "in-box" drivers available within the kernel. If you require the latest version, please download here.

Note: Compatible with FastFrame 3 N322, N351, and N352 only 		Download
MultiPath Director Windows
Updated: February 18, 2026
Files in Package:
  • MultiPath Director Version (v2.26) 2.24 MB
  • Product Release Notes 255.22 KB
 ATTO MultiPath Director is a proprietary driver that enables Windows hosts to connect to storage systems that support ALUA for failover, failback and load balancing across Fibre Channel ports.

Supports the following versions of Windows: Windows 10, 11 & Windows Server 2019, 2022 & 2025.

Requires the latest Windows Device Driver to also be installed alongside the MultiPath Director. 		Download
QuickNAV Utility Linux
Updated: July 13, 2026
Files in Package:
  • QuickNAV version (v3.90)
  • Product Release Notes
 In order to configure an ATTO appliance using the built-in XstreamVIEW configuration utility, you must first identify the IP address to be used for management of the appliance.

QuickNAV is a utility that can be used to identify your ATTO appliance on a network.

 

  		Download
QuickNAV Utility Windows
Updated: February 19, 2025
Files in Package:
  • QuickNAV version (v3.90) 11.61 MB
  • Product Release Notes
 In order to configure an ATTO appliance using the built-in XstreamVIEW configuration utility, you must first identify the IP address to be used for management of the appliance.

QuickNAV is a utility that can be used to identify your ATTO appliance on a network. 		Download