Notes:

QuickUSB is small USB port you can implement into any hardware project of yours. It comes with an unmanaged wrapper library encapsulating many of the USB's functions. The following pages are wrapper documentation form managed perspective. You can order one at http://www.bitwisesys.com

Also, see the Managed wrapper class CsQuickUSB http://code.google.com/p/csquickusb/

Tips & Tricks:

QuickUsb.dll is not unicode friendly, make sure you use ANSI encodings on your pinvoke calls!