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
ThunderLink FC 3162, FC 3322 Flash Bundle VMware
Updated: October 28, 2025
Files in Package:
  • Flash Bundle Version (v09/19/2025) 30.37 MB
  • Product Release Notes 151.8 KB
 ATTO recommends our customers use the latest drivers available. If you require the latest version, please download them at:

https://www.vmware.com/resources/compatibility/search.php?deviceCategory=io

Select your version of ESXi in the Product Release Version, select ATTO Technology from the Brand list, and within the IO Device type field select the proper protocol. 		Download
ThunderLink FC 5082 Driver Linux
Updated: July 7, 2026
Files in Package:
  • Driver Version (v2.30.6) 1 MB
  • Product Release Notes 256.6 KB
 Linux device driver for ThunderLink FC 5082 Fibre Channel 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
ThunderLink FC 5082 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 ThunderLink FC 5082 Fibre Channel 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
ThunderLink FC 5082 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 ThunderLink FC 5082 Fibre Channel Adapters.

Supports the following versions of Windows: Windows 10, 11 and Windows Server 2016, 2019, 2022 & 2025.

  		Download
ThunderLink FC 5082 Flash Bundle Linux
Updated: October 28, 2025
Files in Package:
  • Flash Bundle Version (v04/06/2018) 687.18 KB
  • Product Release Notes 127.32 KB
 Linux flash bundle for ThunderLink FC 5082 adapters.

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

Supported Products: TLFC-5082. 		Download
ThunderLink FC 5082 Flash Bundle macOS
Updated: October 23, 2025
Files in Package:
  • Flash Bundle version (v04/06/2018) 1.37 MB
  • Product Release Notes 127.32 KB
 macOS flash bundle for ThunderLink FC 5082 adapters.

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

Supported Products: TLFC-5082. 		Download
ThunderLink FC 5082 Flash Bundle Windows
Updated: October 28, 2025
Files in Package:
  • Flash Bundle Version (v04/06/2018) 687.21 KB
  • Product Release Notes 127.32 KB
 Windows flash bundle for ThunderLink FC 5082 adapters.

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

Supported Products: TLFC-5082. 		Download
ThunderLink FC 5082 Multi-Path 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
ThunderLink FC 5082 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
ThunderLink SH 3128 Flash Bundle VMware
Updated: April 22, 2026
Files in Package:
  • Flash Bundle Version (v12/13/2022) 131.55 KB
  • Product Release Notes 8.83 MB
 ATTO recommends our customers use the latest drivers available. If you require the latest version, please download them at:

https://www.vmware.com/resources/compatibility/search.php?deviceCategory=io

Select your version of ESXi in the Product Release Version, select ATTO Technology from the Brand list, and within the IO Device type field select the proper protocol. 		Download
XstreamCORE 7550 Firmware
Updated: October 15, 2024
Files in Package:
  • XC7550_3_70_32F.zbd 12.71 MB
  • XstreamCORE 7550 Firmware PRN 219.91 KB
 The latest firmware for XstreamCORE 7550 Bridge.

Instructions on how to flash the latest firmware your bridge can be found in the Installation & Operations Manual. 		Download
XstreamCORE 7600 Firmware
Updated: October 15, 2024
Files in Package:
  • XC7600_4_01_001F.zbd 48.34 MB
  • XstreamCORE 7600 Firmware PRN 206.59 KB
 The latest firmware for XstreamCORE 7600 Bridge.

Instructions on how to flash the latest firmware your bridge can be found in the Installation & Operations Manual. 		Download
XstreamCORE 8100T Firmware
Updated: August 18, 2026
Files in Package:
  • Firmware Version (v2.07.0f6) 42.09 MB
  • Product Release Notes 179.44 KB
 The latest firmware for XstreamCORE 8100T Bridge.

Instructions on how to flash the latest firmware your bridge can be found in Section 6 (page 24) of the Installation & Operations Manual:

https://www.atto.com/wp-content/uploads/WebCollateral/manuals/XstreamCORE-ET-8100T-Product-Installation-and-Operations-Manual-1.pdf

 

Getting Started Guide for assisting first time users with setting up and configuring your bridge:

https://www.atto.com/wp-content/uploads/WebCollateral/manuals/XstreamCORE-ET-8100T-Getting-Started-Guide.pdf

 

NOTE: This firmware version introduces enhancements that require a forward-only upgrade path. As a result, reverting to previous firmware versions is not supported. We recommend reviewing the release notes prior to upgrading. For additional information, please contact ATTO technical support. 		Download
XstreamCORE 8200 Firmware
Updated: May 19, 2026
Files in Package:
  • Product Release Notes (v6.07) 168.49 KB
 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
XstreamCORE 8200T Firmware
Updated: May 19, 2026
Files in Package:
  • Product Release Notes (v6.07) 168.93 KB
 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
Xtend SAN™ iSCSI Initiator for macOS
Updated: April 28, 2026
Files in Package:
  • Xtend SAN version (v7.01) 49.11 MB
  • Product Release Notes 181.27 KB
 Version 7 of ATTO Xtend SAN iSCSI Initiator for Mac.

Click Here for the Xtend SAN iSCSI Initiator Installation & Operations Manual.

Click Here for a step by step guide on YouTube to assist with the installation/authorization process of Xtend SAN.

This software supports: macOS 26 Tahoe, macOS 15 Sequoia, macOS 14 Sonoma & macOS 13 Ventura.

Note: Minor revision upgrades of Xtend SAN (i.e. 7.x to 7.y) are provided free of charge to users.

Major version upgrades (i.e. 6.x to 7.x) require purchase if prior version was purchased more than 90 days previous. 		Download
XtendSAN™ iSCSI Initiator for macOS
Updated: July 28, 2026
Files in Package:
  • Xtend SAN Version (v8.01) 49.15 MB
  • Product Release Notes 254.67 KB
 Version 8 of ATTO XtendSAN iSCSI Initiator for Mac.

Click Here for the Xtend SAN iSCSI Initiator Installation & Operations Manual.

Click Here for a step by step guide on YouTube to assist with the installation/authorization process of XtendSAN.

This software supports: macOS 26 Tahoe, macOS 15 Sequoia, macOS 14 Sonoma & macOS 13 Ventura.

Note: Minor revision upgrades of XtendSAN (i.e. 8.x to 8.y) are provided free of charge to users.

Major version upgrades (i.e. 7.x to 8.x) require purchase if prior version was purchased more than 90 days previous.

  		Download