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:
Celerity

Product Family:
Celerity 32/64Gb Gen 7 HBAs

Operating System:
macOS

Title
ATTO360 Storage macOS

2 files
ATTO360 Storage Version
v2.00.9141.24 MB
Product Release Notes
206.42 KB2026-01-27
A brand new ConfigTool, ATTO360 Storage combines all the features of our popular management application with the powerful benefits found in our ATTO360 software.

Easily monitor and configure ATTO adapter settings, instantly optimize with 1 click tuning profiles, and lean on ATTO ExpertAI to eliminate bottlenecks and costly downtime.
Celerity 16/32/64Gb Fibre Channel Driver macOS – DEXT

2 files
Driver Version
v1.01.13.53 MB
Product Release Notes
158.34 KB2025-10-02
macOS device dext driver for 16/32/64Gb Celerity Fibre Channel Host Bus Adapters.

Supports the following macOS Versions: macOS 26 Tahoe.
Celerity 16/32/64Gb Fibre Channel Driver macOS – KEXT

2 files
Driver Version
v3.142.06 MB
Product Release Notes
244.35 KB2025-10-02
macOS device driver for 16/32/64Gb Celerity Fibre Channel 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 kext 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.
Celerity 16/32/64Gb Fibre Channel Flash Bundle macOS

2 files
Flash Bundle Version
v09/19/202531.76 MB
Product Release Notes
151.8 KB2025-10-02
macOS 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.
Celerity 16/32/64Gb Fibre Channel MultiPath Director Driver macOS – DEXT

2 files
Driver Version
v1.01.1-MP3.74 MB
Product Release Notes
158.37 KB2025-10-02
ATTO MultiPath Director is a proprietary driver that enables macOS hosts to connect to storage systems that support ALUA for failover, failback and load balancing across Fibre Channel ports.

Supports the following macOS Versions: macOS 26 Tahoe.
Celerity 16/32/64Gb Fibre Channel MultiPath Director Driver macOS – KEXT

2 files
Driver Version
v3.14-MP2.34 MB
Product Release Notes
276.59 KB2025-10-02
ATTO MultiPath Director is a proprietary driver that enables macOS hosts to connect to storage systems that support ALUA for failover, failback and load balancing across Fibre Channel ports.

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 kext 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.