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:
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ATTO Product:
ExpressSAS
Product Family:
ExpressSAS 12Gb GT HBAs
Operating System:
macOS
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Archived ExpressSAS 12Gb GT Driver macOS Files in Package:
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Archived macOS device driver for ExpressSAS 12Gb GT Host Bus Adapters. Supports the following macOS Versions: macOS 13 Ventura, macOS 12 Monterey & macOS 11 Big Sur. |
Download |
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Archived ExpressSAS 12Gb GT Driver macOS Files in Package:
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Archived macOS device driver for ExpressSAS 12Gb GT Host Bus Adapters. Supports the following macOS Versions: macOS 15 Sequoia, macOS 14 Sonoma & macOS 13 Ventura. |
Download |
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Archived ExpressSAS 12Gb GT Driver macOS – Dext Files in Package:
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Archived macOS Dext driver for ExpressSAS 12Gb GT Host Bus Adapters. Supports the following macOS Versions: macOS 26 Tahoe. |
Download |
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ExpressSAS 12Gb GT Driver macOS – Dext Files in Package:
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macOS Dext driver for ExpressSAS 12Gb GT Host Bus Adapters. Supports the following macOS Versions: macOS 26 Tahoe. |
Download |
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ExpressSAS 12Gb GT Driver macOS – Kext Files in Package:
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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 |