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Asked: 2026-05-10T18:09:04+00:00

Is there any way to determine a removable drive speed in Windows without actually

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Is there any way to determine a removable drive speed in Windows without actually reading in a file. And if I do have to read in a file, how much needs to be read to get a semi accurate speed (e.g. determine whether a device is USB2 or USB1)?

EDIT: Just to clarify, USB2 and USB1 were an example. These could be Compact Flash, could be SSD, could be a removable drive. And I am trying to determine this as fast as possible as it has a real effect on the responsiveness of the application.

EDIT: Should also clarify, this has to be done programatically. It will probably be done in C++.

EDIT: Boost answer is kind of what I was looking for (though I haven’t written any WMI in C++). But I need to know what properties I have to check to determine relative speed. I don’t need exact speed (like I said about the difference in speed between USB1 and USB2), but I need to know if it is going to be SLLOOOOWWW.

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1 Answer

  1. WMI – Physical Disks Properties is an article I found which would at least help you figure out what you have connected. I foresee things heading toward tables equating particular manufacturers and models to speeds, which is not as simple a solution as you may have hoped for.

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