dynabook USB-C Dock (PA5356E-1PRP) is occasionally disconnecting from PC without any user interaction.
This issue has been reported when connecting the USB-C (PA5356E-1PRP) dock to Portege X30-F, Tecra X40-F and X50-F series.
SOLUTION
To correct this issue, please apply firmware (BIOS) version 3.20 or later for Portege X30-F, Tecra X40-F and X50-F series.
FIRMWARE (BIOS) DOWNLOAD
The firmware (BIOS) can be either downloaded via our driver download portal or using the procedure to automatically update it within Windows 10.
NOTE
If you previously applied the special firmware for the USB-C Dock (PA5356E-1PRP), which has been provided as workaround for the time being, please find below the default firmware version:
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