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:
macOS

Title
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.
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.
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 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 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 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.