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Update kernel-dma-protection-for-thunderbolt.md

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Updated document with new snapshot of device manager
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Aacer Daken
2020-06-10 13:41:59 -07:00
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windows/security/information-protection/kernel-dma-protection-for-thunderbolt.md
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@ -103,6 +103,8 @@ No, Kernel DMA Protection only protects against drive-by DMA attacks after the O
DMA-remapping is supported for specific device drivers, and is not universally supported by all devices and drivers on a platform. To check if a specific driver is opted into DMA-remapping, check the values corresponding to the DMA Remapping Policy property in the Details tab of a device in Device Manager*. A value of 0 or 1 means that the device driver does not support DMA-remapping. A value of 2 means that the device driver supports DMA-remapping. If the property is not available, then the policy is not set by the device driver (i.e. the device driver does not support DMA-remapping). DMA-remapping is supported for specific device drivers, and is not universally supported by all devices and drivers on a platform. To check if a specific driver is opted into DMA-remapping, check the values corresponding to the DMA Remapping Policy property in the Details tab of a device in Device Manager*. A value of 0 or 1 means that the device driver does not support DMA-remapping. A value of 2 means that the device driver supports DMA-remapping. If the property is not available, then the policy is not set by the device driver (i.e. the device driver does not support DMA-remapping).
Please check the driver instance for the device you are testing. Some drivers may have varying values depending on the location of the device (internal vs. external). Please check the driver instance for the device you are testing. Some drivers may have varying values depending on the location of the device (internal vs. external).
![Kernel DMA protection user experience](images/device_details_tab_1903.png)
*For Windows 10 versions 1803 and 1809, the property field in Device Manager uses a GUID, as highlighted in the following image. *For Windows 10 versions 1803 and 1809, the property field in Device Manager uses a GUID, as highlighted in the following image.
![Kernel DMA protection user experience](images/device-details-tab.png) ![Kernel DMA protection user experience](images/device-details-tab.png)