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    <p><strong>EDIT:</strong> Added code to print drive letter.</p> <hr> <p>Check if this example works for you. It uses WMI.</p> <pre><code>Console.WriteLine("Manufacturer: {0}", queryObj["Manufacturer"]); ... Console.WriteLine(" Name: {0}", c["Name"]); // here it will print drive letter </code></pre> <p>The full code sample:</p> <pre><code>namespace WMISample { using System; using System.Management; public class MyWMIQuery { public static void Main() { try { ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_DiskDrive"); foreach (ManagementObject queryObj in searcher.Get()) { Console.WriteLine("DeviceID: {0}", queryObj["DeviceID"]); Console.WriteLine("PNPDeviceID: {0}", queryObj["PNPDeviceID"]); Console.WriteLine("Manufacturer: {0}", queryObj["Manufacturer"]); Console.WriteLine("Model: {0}", queryObj["Model"]); foreach (ManagementObject b in queryObj.GetRelated("Win32_DiskPartition")) { Console.WriteLine(" Name: {0}", b["Name"]); foreach (ManagementBaseObject c in b.GetRelated("Win32_LogicalDisk")) { Console.WriteLine(" Name: {0}", c["Name"]); // here it will print drive letter } } // ... Console.WriteLine("--------------------------------------------"); } } catch (ManagementException e) { Console.WriteLine(e.StackTrace); } Console.ReadLine(); } } } </code></pre> <p>I think those properties should help you distinguish genuine USB drives from the others. Test with several pen drives to check if the values are the same. See full reference for <strong>Win32_DiskDrive</strong> properties here:</p> <p><a href="http://msdn.microsoft.com/en-us/library/aa394132(VS.85).aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/aa394132(VS.85).aspx</a></p> <p>Check if this article is also of any help to you:</p> <p><a href="http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral/thread/48a9758c-d4db-4144-bad1-e87f2e9fc979" rel="nofollow noreferrer">http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral/thread/48a9758c-d4db-4144-bad1-e87f2e9fc979</a></p>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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