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
ATTO360 Storage Linux
Updated: June 22, 2026
Files in Package:
  • ATTO360 Storage Version (v2.04) 118.85 MB
  • Product Release Notes 217.22 KB
 A brand new ConfigTool, ATTO360 Storage combines all the features of our popular management application with the powerful benefits found in our ATTO360 software.

Easily monitor and configure ATTO adapter settings, instantly optimize with 1 click tuning profiles, and lean on ATTO ExpertAI to eliminate bottlenecks and costly downtime.

The latest drivers and flash bundle are included with ATTO360 Storage. More information about supported products and supported versions can be found in the ReadMe file downloaded with ATTO360 Storage. 		Download
ATTO360 Storage macOS
Updated: June 22, 2026
Files in Package:
  • ATTO360 Storage Version (v2.04) 154.41 MB
  • Product Release Notes 204.34 KB
 A brand new ConfigTool, ATTO360 Storage combines all the features of our popular management application with the powerful benefits found in our ATTO360 software.

Easily monitor and configure ATTO adapter settings, instantly optimize with 1 click tuning profiles, and lean on ATTO ExpertAI to eliminate bottlenecks and costly downtime.

 

The latest drivers and flash bundle are included with ATTO360 Storage. More information about supported products and supported versions can be found in the ReadMe file downloaded with ATTO360 Storage. 		Download
ATTO360 Storage Windows
Updated: June 22, 2026
Files in Package:
  • ATTO360 Storage Version (v2.04) 156.08 MB
  • Product Release Notes 208.24 KB
 A brand new ConfigTool, ATTO360 Storage combines all the features of our popular management application with the powerful benefits found in our ATTO360 software.

Easily monitor and configure ATTO adapter settings, instantly optimize with 1 click tuning profiles, and lean on ATTO ExpertAI to eliminate bottlenecks and costly downtime.

 

The latest drivers and flash bundle are included with ATTO360 Storage. More information about supported products and supported versions can be found in the ReadMe file downloaded with ATTO360 Storage. 		Download
Celerity 16/32/64Gb Fibre Channel Driver FreeBSD
Updated: September 10, 2025
Files in Package:
  • Driver Version (v2.04) 1.24 MB
  • Product Release Notes 209.24 KB
 Proprietary FreeBSD device driver for Celerity 16/32/64Gb Fibre Channel Host Bus Adapters.

Supports the following FreeBSD versions: FreeBSD 13 & 14. 		Download
Celerity 16/32/64Gb Fibre Channel Driver illumos
Updated: February 24, 2026
Files in Package:
  • Driver Version (v1.11) 1.09 MB
  • Product Release Notes 164.62 KB
 Proprietary illumos device driver for Celerity 16/32/64Gb Fibre Channel Host Bus Adapters.

Supports the following versions: OpenIndiana, OmniOS, NexentaStor 4 & 5, NestOS. 		Download
Celerity 16/32/64Gb Fibre Channel Driver VMware
Updated: September 3, 2026
Files in Package:
  • Driver Version (v2.21.7) 343.31 KB
 VMware Driver for Celerity 16/32/64Gb Fibre Channel adapters.

Supported Products: Celerity FC-161P, Celerity FC- 162P, Celerity FC-164P, Celerity FC-321E, Celerity FC-321E, Celerity FC-324E, Celerity FC-321P, Celerity FC- 322P, Celerity FC-324P, Celerity FC-641E , Celerity FC-642E and Celerity FC- 644E. 		Download
Celerity 16/32/64Gb Fibre Channel Flash Bundle FreeBSD
Updated: October 3, 2025
Files in Package:
  • Flash Bundle Version (v09/19/2025) 11.76 MB
  • Product Release Notes 151.8 KB
 FreeBSD flash bundle for Celerity 16/32/64Gb Fibre Channel Host Bus Adapters.

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

Supported Products: Celerity FC-161P, Celerity FC- 162P, Celerity FC-164P, Celerity FC-321E, Celerity FC-321E, Celerity FC-324E, Celerity FC-321P, Celerity FC- 322P, Celerity FC-324P, Celerity FC-641E , Celerity FC-642E and Celerity FC- 644E. 		Download
Celerity 16/32/64Gb Fibre Channel Flash Bundle illumos
Updated: October 23, 2025
Files in Package:
  • Flash Bundle Version (v09/19/2025) 30.37 MB
  • Product Release Notes 151.8 KB
 illumos flash bundle for Celerity 16/32/64Gb Fibre Channel Host Bus Adapters.

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

Supported Products: Celerity FC-161P, Celerity FC- 162P, Celerity FC-164P, Celerity FC-321E, Celerity FC-321E, Celerity FC-324E, Celerity FC-321P, Celerity FC- 322P, Celerity FC-324P, Celerity FC-641E , Celerity FC-642E and Celerity FC- 644E. 		Download
Celerity 16/32/64Gb Fibre Channel Flash Bundle VMware
Updated: September 3, 2026
Files in Package:
  • Flash Bundle Version (v09/19/2025) 30.37 MB
  • Product Release Notes 151.8 KB
 VMware flash bundle for Celerity 16/32/64Gb Fibre Channel adapters.

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

Supported Products: Celerity FC-161P, Celerity FC- 162P, Celerity FC-164P, Celerity FC-321E, Celerity FC-321E, Celerity FC-324E, Celerity FC-321P, Celerity FC- 322P, Celerity FC-324P, Celerity FC-641E , Celerity FC-642E and Celerity FC- 644E. 		Download
Celerity 8Gb Fibre Channel Driver Linux
Updated: July 7, 2026
Files in Package:
  • Driver Version (v2.30.6) 1 MB
  • Product Release Notes 256.6 KB
 Proprietary Linux device driver for 8Gb Celerity Fibre Channel Host Bus Adapters.

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
Celerity 8Gb Fibre Channel Driver macOS
Updated: July 7, 2026
Files in Package:
  • Driver Version (v3.38.1) 1.85 MB
  • Product Release Notes 273.22 KB
 macOS device driver for 8Gb Celerity Fibre Channel Host Bus Adapters.

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 Driver Windows
Updated: July 7, 2026
Files in Package:
  • Driver Version (v2.14.1) 3.71 MB
  • Product Release Notes 193.45 KB
 Windows device driver for 8Gb Celerity Fibre Channel Host Bus Adapters.

Supports the following versions of Windows: Windows 10, 11 and Windows Server 2016, 2019, 2022 & 2025. 		Download
Celerity 8Gb Fibre Channel Flash Bundle Linux
Updated: February 19, 2025
Files in Package:
  • Flash Bundle version (v04/06/2018) 687.18 KB
  • Product Release Notes 127.32 KB
 Linux flash bundle for Celerity 8Gb Fibre Channel adapters.

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

Supported Products: Celerity FC-81EN, Celerity FC-82EN and Celerity FC-84EN.

  		Download
Celerity 8Gb Fibre Channel Flash Bundle macOS
Updated: February 19, 2025
Files in Package:
  • Flash Bundle version (v04/06/2018) 1.37 MB
  • Product Release Notes 127.32 KB
 macOS flash bundle for Celerity 8Gb Fibre Channel adapters.

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

Supported Products: Celerity FC-81EN, Celerity FC-82EN and Celerity FC-84EN. 		Download
Celerity 8Gb Fibre Channel Flash Bundle Windows
Updated: February 19, 2025
Files in Package:
  • Flash Bundle version (v04/06/2018) 687.21 KB
  • Product Release Notes 127.32 KB
 Windows flash bundle for Celerity 8Gb Fibre Channel adapters.

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

Supported Products: Celerity FC-81EN, Celerity FC-82EN and Celerity FC-84EN. 		Download
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
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