To access such values you must cast the property and an array and then iterate over the elements. try this C++ CLI sample code.
#include "stdafx.h"
#using <system.management.dll>
using namespace System;
using namespace System::Management;
int main(array<System::String ^> ^args)
{
ManagementObjectSearcher ^searcher =
gcnew ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_DiskDrive");
for each (ManagementObject ^drive in searcher->Get())
{
for each (ManagementObject ^o in drive->GetRelated("Win32_DiskPartition"))
{
for each (ManagementObject ^logDisk in o->GetRelated("Win32_LogicalDisk"))
{
Console::WriteLine(
"Disk: " + drive["Caption"]
+ "\n\tSize : " + drive["Size"]
+ "\n\tDriveLetter : " + logDisk["Name"]
+ "\n\t" + drive["PNPDeviceID"]
+ "\n\tSerialNumber: " + drive["SerialNumber"]
+ "\n\tRevision : " + drive["FirmwareRevision"]);
Console::WriteLine("Capabilities");
for each(UInt16 v in (array<UInt16>^)(drive->Properties["Capabilities"]->Value))
{
Console::WriteLine(v);
}
}
}
}
Console::ReadLine();
return 0;
}