Current 40GbE Network Interface Cards Downloads
macOS driver for FastFrame Network Interface Cards. Download this file to your Mac and double click it to launch the driver installation program.
Specific configurations may cause the ATTO adapter to become
non-responsive but still appear available within the macOS. Please
review the latest Technical Bulletin for current troubleshooting information regarding this scenario.
macOS High Sierra has introduced User-Approved Kernel Extension Loading. For additional information on this update, please visit: https://developer.apple.com/library/archive/technotes/tn2459/_index.html