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).

ATTO Product:
ExpressSAS

Product Family:
All

Operating System:
All

Title
ATTO ConfigTool Linux

1 file
ConfigTool version
v4.4125.19 MB2024-06-07
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.
ATTO ConfigTool macOS

2 files
ConfigTool version:
v4.41117.07 MB
Product Release Notes
342.42 KB2024-07-17
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.
ATTO ConfigTool Windows

1 file
ConfigTool version:
v4.410 KB2024-06-07
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.
ATTO360 Storage Linux

2 files
Version
v1.01.231.26 MB
Product Release Notes
206.92 KB2025-09-24
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.
ATTO360 Storage macOS

2 files
Version
v1.01.237.2 MB
Product Release Notes
206.92 KB2025-09-24
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.
ATTO360 Storage Windows

2 files
Version
v1.01.259.89 MB
Product Release Notes
206.92 KB2025-09-24
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.
ExpressSAS 12Gb GT Driver FreeBSD

2 files
Driver Version
v1.041.34 MB
Product Release Notes
172.43 KB2025-12-22
Proprietary FreeBSD device driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following FreeBSD versions: FreeBSD 13 & 14.
ExpressSAS 12Gb GT Driver illumos

2 files
Driver Version
v1.041.04 MB
Product Release Notes
132.47 KB2025-12-22
Proprietary illumos device driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following illumos versions: OpenIndiana, OmniOS, NexentaStor 4, NexentaStor 5, NestOS.
ExpressSAS 12Gb GT Driver Linux

2 files
Driver Version
v1.10.11.18 MB
Product Release Notes
182.5 KB2025-04-23
Proprietary Linux device driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following Linux Distributions: Red Hat Enterprise Linux 8 & 9, Rocky Linux 8 & 9, openSUSE Leap 15, SUSE Linux Enterprise Server 15, Ubuntu 22.04 LTS & 24.04 LTS.
ExpressSAS 12Gb GT Driver macOS – Dext

2 files
Driver Version
v1.01.23.13 MB
Product Release Notes
123.19 KB2025-12-22
macOS Dext driver for ExpressSAS 12Gb GT Host Bus Adapters.

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

2 files
Driver Version
v1.11.32.07 MB
Product Release Notes
201.05 KB2025-12-22
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.
ExpressSAS 12Gb GT Driver Windows

2 files
Driver Version
v1.104.31 MB
Product Release Notes
179.84 KB2025-12-22
Windows device driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following versions of Windows: Windows 10, 11, Windows Server 2016, 2019, 2022 & 2025.
ExpressSAS 12Gb GT Flash Bundle FreeBSD

2 files
Flash Bundle Version
v2512125.05 MB
Product Release Notes
121.31 KB2025-12-17
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.
ExpressSAS 12Gb GT Flash Bundle illumos

2 files
Flash Bundle Version
v2512126.15 MB
Product Release Notes
121.31 KB2025-12-17
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.
ExpressSAS 12Gb GT Flash Bundle Linux

2 files
Flash Bundle Version
v2512126.15 MB
Product Release Notes
121.31 KB2025-12-17
Linux flash bundle for ExpressSAS 12Gb GT 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.
ExpressSAS 12Gb GT Flash Bundle macOS

2 files
Flash Bundle Version
v2512126.23 MB
Product Release Notes
121.31 KB2025-12-17
macOS flash bundle for ExpressSAS 12Gb GT 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.
ExpressSAS 12Gb GT Flash Bundle VMware

2 files
Flash Bundle Version
v2512126.15 MB
Product Release Notes
121.31 KB2025-12-17
VMware flash bundle for ExpressSAS 12Gb GT Host Bus adapters.

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.

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.
ExpressSAS 12Gb GT Flash Bundle Windows

2 files
Flash Bundle Version
v2512126.15 MB
Product Release Notes
121.31 KB2025-12-17
Windows flash bundle for ExpressSAS 12Gb GT 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.
ExpressSAS 12Gb GT WHQL Driver Windows 10

1 file
WHQL Driver version
v1.0013.51 MB
Windows Hardware Quality Labs (WHQL) driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following versions of Windows: Windows 10
ExpressSAS 12Gb GT WHQL Driver Windows 2019

1 file
WHQL Driver version
v1.0013.51 MB
Windows Hardware Quality Labs (WHQL) driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following versions of Windows: Windows Server 2019
ExpressSAS 24Gb Driver FreeBSD

2 files
Driver version
v1.011.28 MB
Product Release Notes
146.62 KB2025-02-03
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.
ExpressSAS 24Gb Driver illumos

2 files
Driver Version:
v1.01987.14 KB2025-02-03
Product Release Notes
145.67 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.
ExpressSAS 24Gb Driver Linux

2 files
Driver version
v1.011.17 MB
Product Release Notes
147.84 KB2025-02-03
Proprietary Linux device driver for ExpressSAS 24Gb Host Bus Adapters.

Supports the following Linux Distributions: Red Hat Enterprise Linux 8 & 9, Rocky Linux 8 & 9, openSUSE Leap 15, SUSE Linux Enterprise Server 15, Ubuntu 22.04.

More information can be found in the ATTO ExpressSAS 24Gb SAS Adapter Linux ReadMe file downloaded with the driver.
ExpressSAS 24Gb Driver macOS – Dext

2 files
Driver Version
v1.00.83.69 MB
Product Release Notes
116.46 KB2025-10-06
macOS Dext driver for ExpressSAS 24Gb Host Bus Adapters.

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

2 files
Driver version
v1.022.18 MB
Product Release Notes
155.75 KB2025-02-03
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.
ExpressSAS 24Gb Driver Windows

2 files
Driver version
v1.014.3 MB
Product Release Notes
146.22 KB2025-02-03
Windows device driver for ExpressSAS 24Gb Host Bus Adapters.

Supports the following versions of Windows: Windows 10, 11 & Windows Server 2019, 2022.
ExpressSAS 24Gb Flash Bundle FreeBSD

2 files
Flash Bundle version
v01/30/20253.8 MB
Product Release Notes
107.25 KB2025-02-03
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.
ExpressSAS 24Gb Flash Bundle illumos

2 files
Flash Bundle Version
v01/30/202510.84 MB
Product Release Notes
107.25 KB2025-02-03
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.
ExpressSAS 24Gb Flash Bundle Linux

2 files
Flash Bundle version
v01/30/202510.84 MB
Product Release Notes
107.25 KB2025-02-03
Linux 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.
ExpressSAS 24Gb Flash Bundle macOS

2 files
Flash Bundle version
v01/30/202511.75 MB
Product Release Notes
107.25 KB2025-02-03
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.
ExpressSAS 24Gb Flash Bundle Windows

2 files
Flash Bundle Version
v01/30/202510.84 MB
Product Release Notes
107.25 KB2025-02-03
Windows 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.