Use of open source LIB USB, direct manipulation using DELPHI USB, eliminating the need to develop their own USB drive troubles. Here is the routine in DELPHI environment. Before using a download the LIB the USB

DelphiLibUSB-WIN32\COPYING_GPL.txt
..................\COPYING_LGPL.txt
..................\LibUSB.dcu
..................\LibUSB.pas
..................\readme.txt
..................\USBLibExport.dll
..................\USBTest.cfg
..................\USBTest.dof
..................\USBTest.dpr
..................\USBTest.dsk
..................\USBTest.exe
..................\C++ USBLibExport\libusb.lib
..................\................\StdAfx.cpp
..................\................\StdAfx.h
..................\................\usb.h
..................\................\USBLibExport.cpp
..................\................\USBLibExport.def
..................\................\USBLibExport.dsp
..................\................\USBLibExport.dsw
..................\................\USBLibExport.h
..................\................\USBLibExport.ncb
..................\................\USBLibExport.opt
..................\................\USBLibExport.plg
..................\................\USBLibExport.sln
..................\................\USBLibExport.suo
..................\................\USBLibExport.vcproj
..................\................\Release\BuildLog.htm
..................\................\.......\StdAfx.obj
..................\................\.......\USBLibExport.dll
..................\................\.......\USBLibExport.exp
..................\................\.......\USBLibExport.lib
..................\................\.......\USBLibExport.obj
..................\................\.......\USBLibExport.pch
..................\................\.......\vc60.idb
..................\................\.......\vc70.idb
..................\................\Debug\BuildLog.htm
..................\................\.....\StdAfx.obj
..................\................\.....\USBLibExport.dll
..................\................\.....\USBLibExport.exp
..................\................\.....\USBLibExport.lib
..................\................\.....\USBLibExport.obj
..................\................\.....\USBLibExport.pch
..................\................\.....\USBLibExport.pdb
..................\................\.....\vc60.idb
..................\................\.....\vc70.idb
..................\................\.....\vc70.pdb
..................\................\Release
..................\................\Debug
..................\C++ USBLibExport
DelphiLibUSB-WIN32

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