Twin25G T5 Thunderbolt 5 Adapter
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Driver (0)
No Driver was found for product.
 
Firmware (2)
IDDownload TitleDownload LinkPost Date
1267 Sonnet Thunderbolt 5 Firmware Updater 2.1.69 [macOS] 2.1.69Oct-14-2026
1269 Sonnet Thunderbolt 5 Firmware Updater 2.1.69 [Windows] 2.1.69Oct-14-2026
Operating System Requirements: Windows 11
File Name: Sonnettech_Thunderbolt_Firmware_Update_Tool_2.1.69.zip
File Size: 4.1 MB
Thunderbolt Firmware updater for Windows. This release updates your Sonnet Thunderbolt 5 product’s firmware to version 64.1.69 to improve general reliability. This updater runs only under Windows; Mac users must use the macOS version of the updater.

Notes
• Before running the updater, you must disconnect all devices from your Windows host except for the Thunderbolt 5 device you’re updating.
• If you’re updating Dock, you must also disconnect all downstream devices connected to the dock; the firmware updater cannot launch unless all devices are disconnected from the dock.
• Before running the updater, “safely remove” (eject) any installed SSD.
 
 
Manual (1)
FAQ (3)
IDArticle TitlePost Date
1044 My 10G/25G adapter performance drops significantly on a laptop when battery level is low.Jun-19-26
1223 TWIN25G Teaming for Windows 11Aug-13-26
Only Windows Server has native support for Teaming. The TWIN25G can be configured for Teaming under Windows 11 with the NVIDIA command line tool, mlx5muxtool.exe, which is included with the drive download. Sonnet does not support this tool.
 
1226 TWIN25G macOS driver does not show in ExtensionsJun-01-26