ATTO Software Downloads Archive

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.

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:
Celerity

Product Family:
All

Operating System:
Windows

Title
Archived Celerity 16/32/64Gb Fibre Channel Driver Windows
Files in Package:
  • Driver Version (v2.11) 3.86 MB
  • Product Release Notes 247.92 KB
 Archived Windows device driver for 16/32/64Gb Celerity Fibre Channel Host Bus Adapters.

Supports the following versions of Windows: Windows 10, 11 & Windows Server 2025, 2019, 2022. 		Download
Archived Celerity 16/32/64Gb Fibre Channel Driver Windows
Files in Package:
  • Driver Version (v2.10) 3.85 MB
  • Product Release Notes 242.67 KB
 Archived Windows device driver for 16/32/64Gb Celerity Fibre Channel Host Bus Adapters.

Supports the following versions of Windows: Windows 10, 11 & Windows Server 2025, 2019, 2022 and 2016. 		Download
Archived Celerity 8Gb Fibre Channel Driver Windows
Files in Package:
  • win_drv_celerity8_2110f1.exe 7.68 MB
 Archived Windows device driver for 8Gb Celerity Fibre Channel Host Bus Adapters.

Supports the following versions of Windows: Windows 10, 11 & Windows Server 2016, 2019, 2022. 		Download
Archived Celerity 8Gb Fibre Channel Driver Windows
Files in Package:
  • win_drv_celerity8_2120f1.exe (v2.12) 3.27 MB
  • Archived Celerity 8Gb Fibre Channel Driver Windows PRN 203.39 KB
 Archived Windows device driver for 8Gb Celerity Fibre Channel Host Bus Adapters.

Supports the following versions of Windows: Windows 10, 11 & Windows Server 2019, 2022. 		Download
Archived MultiPath Director Windows
Files in Package:
  • Driver Version (v2.24-MP) 3.53 MB
 Archived Windows PultiPath Director for Celerity Fibre Channel Host Bus Adapters.

ATTO MultiPath Director is a proprietary driver that enables Windows hosts to connect to storage systems that support ALUA for failover, failback and load balancing across Fibre Channel ports.

Supports the following versions of Windows: Windows 10, 11 & Windows Server 2016, 2019, 2022.

Requires the latest Windows Device Driver to also be installed alongside the MultiPath Director. 		Download
Archived MultiPath Director Windows
Files in Package:
  • Driver Version (v2.25-MP) 3.54 MB
  • Product Release Notes 203.23 KB
 Archived Windows MultiPath Director for Celerity Fibre Channel Host Bus Adapters.

ATTO MultiPath Director is a proprietary driver that enables Windows hosts to connect to storage systems that support ALUA for failover, failback and load balancing across Fiber Channel ports.

Supports the following versions of Windows: Windows 10, 11 & Windows Server 2019, 2022.

Requires the latest Windows Device Driver to also be installed alongside the MultiPath Director. 		Download
Celerity 16/32/64Gb Fibre Channel Driver Windows
Files in Package:
  • Driver Version (v3.02) 3.93 MB
  • Product Release Notes 251.59 KB
 Windows device driver for 16/32/64Gb Celerity Fibre Channel Host Bus Adapters.

Supports the following versions of Windows: Windows 10, 11 and Windows Server 2016, 2019, 2022 & 2025. 		Download
Celerity 16/32/64Gb Fibre Channel Flash Bundle Windows
Files in Package:
  • Flash Bundle Version (v09/19/2025) 30.37 MB
  • Product Release Notes 151.8 KB
 Windows flash bundle for Celerity 16/32/64Gb Fibre Channel 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