Resolving Non-Responsive ATTO Thunderbolt Adapters

ATTO ThunderLink may become non-responsive but may still appear available within the macOS. This also may occur with an ATTO FastFrame NIC in a third-party Thunderbolt chassis. This only occurs when the ATTO product is connected to a Mac using Thunderbolt Route String 3 AND any additional Thunderbolt device is connected to the Mac on Route String 1. A reboot of the Mac or Thunderbolt device will clear the issue, but it is likely to occur again.

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Last Updated: October 8, 2025