According to Bleeping Computer , installing this utility and restarting your computer will resolve the "Unknown Device" error in Device Manager. Installation Details

: The software is officially titled the Toshiba HDD Protection Utility .

: This driver was standard for Windows 7, 8, and 10. If you are using an SSD, this driver is technically unnecessary as SSDs have no moving parts to "park," but you may still need it to clear the yellow exclamation mark in your Device Manager.

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