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:
All

Product Family:
All

Operating System:
FreeBSD

Title
Celerity 16/32/64Gb Fibre Channel Driver FreeBSD
Updated: September 10, 2025
Files in Package:
  • Driver Version (v2.04) 1.24 MB
  • Product Release Notes 209.24 KB
 Proprietary FreeBSD device driver for Celerity 16/32/64Gb Fibre Channel Host Bus Adapters.

Supports the following FreeBSD versions: FreeBSD 13 & 14. 		Download
Celerity 16/32/64Gb Fibre Channel Flash Bundle FreeBSD
Updated: October 3, 2025
Files in Package:
  • Flash Bundle Version (v09/19/2025) 11.76 MB
  • Product Release Notes 151.8 KB
 FreeBSD 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
ExpressSAS 12Gb GT Driver FreeBSD
Updated: May 27, 2026
Files in Package:
  • Driver Version (v2.00.0) 1.28 MB
  • Product Release Notes 173.11 KB
 Proprietary FreeBSD device driver for ExpressSAS 12Gb GT Host Bus Adapters.

Supports the following FreeBSD versions: FreeBSD 13 & 14. 		Download
ExpressSAS 12Gb GT Flash Bundle FreeBSD
Updated: May 27, 2026
Files in Package:
  • Flash Bundle Version (v260427) 6.88 MB
  • Product Release Notes 123.25 KB
 FreeBSD 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
ExpressSAS 24Gb Driver FreeBSD
Updated: June 22, 2026
Files in Package:
  • Driver Version (v1.03.1) 1.28 MB
  • Product Release Notes 147.15 KB
 Proprietary FreeBSD device driver for ExpressSAS 24Gb Host Bus Adapters.

Supports the following FreeBSD versions: FreeBSD 13 (minimum 13.1), FreeBSD 14 (minimum 14.0).

More information can be found in the ATTO ExpressSAS 24Gb SAS Adapter FreeBSD ReadMe file downloaded with the driver. 		Download
ExpressSAS 24Gb Flash Bundle FreeBSD
Updated: June 22, 2026
Files in Package:
  • Flash Bundle Version (v260526) 3.79 MB
  • Product Release Notes 110.13 KB
 FreeBSD flash bundle for ExpressSAS 24Gb Host Bus 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. 		Download
FastFrame 3 10/25/40/50/100GbE SmartNIC FreeBSD Driver
Updated: February 19, 2025
Files in Package:
  • Driver version (v3.4.2)
 ATTO recommends our customers use the latest "in-box" drivers available within the kernel. If you require the latest version, please download here.

Note: Compatible with FastFrame 3 N322, N351, and N352 only 		Download
XstreamCORE 7550 Firmware
Updated: October 15, 2024
Files in Package:
  • XC7550_3_70_32F.zbd 12.71 MB
  • XstreamCORE 7550 Firmware PRN 219.91 KB
 The latest firmware for XstreamCORE 7550 Bridge.

Instructions on how to flash the latest firmware your bridge can be found in the Installation & Operations Manual. 		Download
XstreamCORE 7600 Firmware
Updated: October 15, 2024
Files in Package:
  • XC7600_4_01_001F.zbd 48.34 MB
  • XstreamCORE 7600 Firmware PRN 206.59 KB
 The latest firmware for XstreamCORE 7600 Bridge.

Instructions on how to flash the latest firmware your bridge can be found in the Installation & Operations Manual. 		Download
XstreamCORE 8100T Firmware
Updated: August 18, 2026
Files in Package:
  • Firmware Version (v2.07.0f6) 42.09 MB
  • Product Release Notes 179.44 KB
 The latest firmware for XstreamCORE 8100T Bridge.

Instructions on how to flash the latest firmware your bridge can be found in Section 6 (page 24) of the Installation & Operations Manual:

https://www.atto.com/wp-content/uploads/WebCollateral/manuals/XstreamCORE-ET-8100T-Product-Installation-and-Operations-Manual-1.pdf

 

Getting Started Guide for assisting first time users with setting up and configuring your bridge:

https://www.atto.com/wp-content/uploads/WebCollateral/manuals/XstreamCORE-ET-8100T-Getting-Started-Guide.pdf

 

NOTE: This firmware version introduces enhancements that require a forward-only upgrade path. As a result, reverting to previous firmware versions is not supported. We recommend reviewing the release notes prior to upgrading. For additional information, please contact ATTO technical support. 		Download
XstreamCORE 8200 Firmware
Updated: May 19, 2026
Files in Package:
  • Product Release Notes (v6.07) 168.49 KB
 Please contact ATTO Customer Support at +1 (716) 691-1999 or via our web site at https://www.atto.com/about/contact-atto/ to obtain the latest instructions and firmware for your XtreamCORE Intelligent Bridge. Download
XstreamCORE 8200T Firmware
Updated: May 19, 2026
Files in Package:
  • Product Release Notes (v6.07) 168.93 KB
 Please contact ATTO Customer Support at +1 (716) 691-1999 or via our web site at https://www.atto.com/about/contact-atto/ to obtain the latest instructions and firmware for your XtreamCORE Intelligent Bridge. Download