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.

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ATTO Product:
ExpressSAS

Product Family:
ExpressSAS 12Gb GT HBAs

Operating System:
illumos

Title
ExpressSAS 12Gb GT Driver illumos
Updated: May 27, 2026
Files in Package:
  • Driver Version (v2.00.0) 1.06 MB
  • Product Release Notes 131.69 KB
 Proprietary illumos device driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following illumos versions: OpenIndiana, OmniOS, NexentaStor 4, NexentaStor 5, NestOS. 		Download
ExpressSAS 12Gb GT Flash Bundle illumos
Updated: May 27, 2026
Files in Package:
  • Flash Bundle Version (v260427) 12.32 MB
  • Product Release Notes 123.25 KB
 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. 		Download