Reading from a USB port with Win32 API

I have a HID device (magnetic cardreader) that uses a usb port to connect to a computer running any version of windows.  I want to be able to figure out what port the device is on and read information from it.  I know I need to use the Win32 API, but I haven't been able to find any useful information on how to do this.  Can any one help?

Thanks in advance.
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The 'usual' way to communicate with an USB device is to call 'CreateFile()' to obtain a handle to the USB driver and send commands using 'DeviceIoControl()' (see e.g. - the rest is specific to the device that you want to communicate with.

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yes what JKR states is corrrect
treat the port as file
do create file() readfile() write file() it will work....

i used the simmilar for printer port and serial port as files. so USB also work.

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