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:
Celerity

Product Family:
Celerity 16/32Gb Gen 6 HBAs

Operating System:
illumos

Title
Celerity 16/32/64Gb Fibre Channel Driver illumos
Updated: February 24, 2026
Files in Package:
  • Driver Version (v1.11) 1.09 MB
  • Product Release Notes 164.62 KB
 Proprietary illumos device driver for Celerity 16/32/64Gb Fibre Channel Host Bus Adapters.

Supports the following versions: OpenIndiana, OmniOS, NexentaStor 4 & 5, NestOS. 		Download
Celerity 16/32/64Gb Fibre Channel Flash Bundle illumos
Updated: October 23, 2025
Files in Package:
  • Flash Bundle Version (v09/19/2025) 30.37 MB
  • Product Release Notes 151.8 KB
 illumos flash bundle for Celerity 16/32/64Gb Fibre Channel Host Bus Adapters.

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

Supported Products: Celerity FC-161P, Celerity FC- 162P, Celerity FC-164P, Celerity FC-321E, Celerity FC-321E, Celerity FC-324E, Celerity FC-321P, Celerity FC- 322P, Celerity FC-324P, Celerity FC-641E , Celerity FC-642E and Celerity FC- 644E. 		Download