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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).
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.
![Kernel DMA protection user experience](images/device-details-tab.png)