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ATTO Software Downloads Archive

The following are archived versions of ATTO drivers and software.

Click here for current 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.

Select an ATTO Product plus a Product Family to begin:

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).

ATTO Product:
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Product Family:
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Operating System:
macOS

Title
Celerity 16/32/64Gb Fibre Channel Driver macOS – DEXT

Files in Package:
  • Driver Version (v1.03) 3.71 MB
  • Product Release Notes 125.36 KB
 macOS device dext driver for 16/32/64Gb Celerity Fibre Channel Host Bus Adapters.

Supports the following macOS Versions: macOS 26 Tahoe. 		Download
Celerity 16/32/64Gb Fibre Channel Driver macOS – KEXT

Files in Package:
  • Driver Version (v3.16) 2.08 MB
  • Product Release Notes 248.87 KB
 macOS device driver for 16/32/64Gb Celerity Fibre Channel Host Bus Adapters.

Supports the following macOS Versions: 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 kext 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 16/32/64Gb Fibre Channel MultiPath Director Driver macOS – DEXT

Files in Package:
  • Driver Version (v1.03-MP) 3.93 MB
  • Product Release Notes 125.32 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. 		Download
Celerity 16/32/64Gb Fibre Channel MultiPath Director Driver macOS – KEXT

Files in Package:
  • Driver Version (v3.16-MP) 2.76 MB
  • Product Release Notes 282.29 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 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 kext 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
ExpressSAS 12Gb GT Driver macOS – Dext

Files in Package:
  • Driver Version (v2.01) 3.34 MB
  • Product Release Notes 122.85 KB
 macOS Dext driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following macOS Versions: macOS 26 Tahoe. 		Download
ExpressSAS 12Gb GT Driver macOS – Kext

Files in Package:
  • Driver Version (v1.11.3) 2.07 MB
  • Product Release Notes 201.05 KB
 macOS Kext driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following macOS Versions: 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
ExpressSAS 24Gb Driver macOS – Dext

Files in Package:
  • Driver Version (v1.02) 3.89 MB
  • Product Release Notes 121.59 KB
 macOS Dext driver for ExpressSAS 24Gb Host Bus Adapters.

Supports the following macOS Versions: macOS 26 Tahoe. 		Download
ExpressSAS 24Gb Driver macOS – Kext

Files in Package:
  • Driver Version (v1.03.3) 2.32 MB
  • Product Release Notes 161.62 KB
 macOS Kext driver for ExpressSAS 24Gb Host Bus Adapters.

Supports the following macOS Versions: 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
ExpressSAS 24Gb Driver macOS Archive

Files in Package:
  • Driver version: (v1.01) 3.41 MB
  • Product Release Notes 149.7 KB
 Archived macOS device driver for ExpressSAS 24Gb Host Bus Adapters.

Supports the following macOS Versions: 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
ExpressSAS 24Gb Flash Bundle macOS Archive

Files in Package:
  • Flash Bundle Version: (v09/27/2024) 11.63 MB
  • Product Release Notes 104.92 KB
 Archived macOS flash bundle for ExpressSAS 24Gb 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
QuickNAV Utility macOS

Files in Package:
  • QuickNAV-MAC3.6.dmg (v3.6) 28.36 MB
 QuickNAV is a utility that can be used to identify your ATTO appliance on a network. 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.

Please contact ATTO Customer Support at +1 (716) 691-1999 or via our web site at https://www.atto.com/about/contact-atto/ to obtain the latest instructions and firmware for your XtreamCORE Intelligent Bridge. 		Download
ThunderLink FC 3162, FC 3322 Driver macOS – Dext

Files in Package:
  • Driver Version (v1.02.1) 3.53 MB
  • Product Release Notes 160.32 KB
 macOS dext device driver for ThunderLink FC 3162 & FC 3322 Fibre Channel Adapters.

Supports the following macOS Versions: macOS 26 Tahoe. 		Download
ThunderLink FC 3162, FC 3322 Driver macOS – Kext

Files in Package:
  • Driver Version (v3.15) 2.47 MB
  • Product Release Notes 247 KB
 macOS device driver for ThunderLink FC 3162 & FC 3322 Fibre Channel Adapters.

Supports the following macOS Versions: 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 or kexts (also known as System Extensions) to provide the highest-performing drivers possible. 		Download
ThunderLink FC 3162, FC 3322 MultiPath Director Driver macOS – Dext

Files in Package:
  • Driver Version (v1.02.1-MP) 3.74 MB
  • Product Release Notes 160.32 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. 		Download
ThunderLink FC 3162, FC 3322 MultiPath Director Driver macOS – Kext

Files in Package:
  • Driver Version (v3.15-MP) 2.34 MB
  • Product Release Notes 279.65 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 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 or kexts (also known as System Extensions) to provide the highest-performing drivers possible. 		Download
ThunderLink FC 5642, FC 5322 Driver macOS – Dext

Files in Package:
  • Driver Version (v1.02.1) 3.53 MB
  • Product Release Notes 160.32 KB
 macOS dext device driver for ThunderLink FC 5642 & FC 5322 Fibre Channel Adapters.

Supports the following macOS Versions: macOS 26 Tahoe. 		Download
ThunderLink FC 5642, FC 5322 Driver macOS – Kext

Files in Package:
  • Driver Version (v3.15) 2.47 MB
  • Product Release Notes 247 KB
 macOS device driver for ThunderLink FC 5642 & FC 5322 Fibre Channel Adapters.

Supports the following macOS Versions: 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 or kexts (also known as System Extensions) to provide the highest-performing drivers possible. 		Download
ThunderLink FC 5642, FC 5322 MultiPath Director Driver macOS – Dext

Files in Package:
  • Driver Version (v1.02.1-MP) 3.74 MB
  • Product Release Notes 160.32 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. 		Download
ThunderLink FC 5642, FC 5322 MultiPath Director Driver macOS – Kext

Files in Package:
  • Driver Version (v3.15-MP) 2.34 MB
  • Product Release Notes 279.65 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 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 or kexts (also known as System Extensions) to provide the highest-performing drivers possible. 		Download
ThunderLink SH 3128 Driver macOS – Dext

Files in Package:
  • Driver Version (v2.01) 4.35 MB
  • Product Release Notes 121.44 KB
 macOS Dext driver for ThunderLink SH 3128 SAS/SATA Adapters.

Supports the following macOS Versions: macOS 26 Tahoe. 		Download

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